Video. A traffic stop turned into a pursuit with this suspect chasing into this garage with police behind him. Police say they used a taser and he was unaffected by it. Police say the 32yearold martinez struggled with officers. He was able to break free of the officers and run into the kitchen where they were able to get ahold of him. Both had their arms around his neck and then they drug him inside of the house and shut the door. This man in the garage and a friend of martinez gives a different account. They drug him inside of the house and closed the door and i could hear them tasering him and beating on him the whole time. I heard three or four more tasers. Reporter police say he resisted arrest and bit a officer and backup officers arrived. As he was handcuffed, they realized he was not responsive. All of the officers have aeds in cars and we immediately started providing lifesaving measures, including cpr. Reporter police say martinez d died at the hospital. And his mother said he was murdered. He didnt die in the hospital. What do you think happened . They beat him up. They murdered him there in my living room. And he said his 6yearold daughter watched it all. He had convictions for assault and drugs and other Violent Crimes and his family said he was trying to get his life together and had a job and leaves behind a 15yearold son and 8yearold daughter. Three officers are on leave as the d. A. Investigates the death and results of an autopsy are expected to reveal why martinez died. In pittsburg, leslie brinkley, abc 7 news. Well the soberanes fire burning near big sur has turned deadly. A bulldozer operator was killed overnight working the fire line in Monterey County. The fire has scorched nearly 24,000 acres. It is only 10 contained so there is a long way to go. It has destroyed 20 homes since it broke out on friday. Cal fire estimates another 2000 are still threatened. This as firefighters here and in Southern California work to contain the flames. Here is abc News Reporter ray ram undie with the latest. Reporter shock and awe across the west as plumes of smoke billow in the california skies. For days the sight of endless orange and yellow flames and today a sign of progress. It looks like were just starting to turn the corner on this a little bit in that we had a large burnout operation. Reporter 3000 local and forest firefighters working feverishly to contain the massive and stubborn flames. 18 homes charred and those allowed to return back home thankful to have something to return to. I unlocked every day and i unlocked every gate so the Fire Department or anybody that needs to come threw to save the house could do what they needed to do. Burning 37,000 acres so far, in california near big sur, eight hikers lost for days assisted by firefighters to safety. They found the hikers where they were putting in fire control lines. Reporter and now growing concerns for air quality across california as a haze of smoke hovers over northern california, panic over respiratory disease and other complications. And the combination of Climate Change and drought and record heat waves will lead to more wildfires which will have a longterm impact on peoples health. Reporter the California Lung association said air quality has improved but longterm effects are possible and the heat isnt letting up. Temperatures are expected to remain in the high 90s and even into the tripledigits through thursday. Abc news, new york. Well the heat continues to be an issue for firefighters all across the state. Spencer christian is here now with the accuweather update. Yes, i am. Ill ask you to look at live doppler 7 hd but first i have to run inside of my area here and click on another control and here we go. Live doppler 7 hd shows low clouds at the coast and sunny skies over the inland and the bay on this hot day. It is a hot week all week long. And highs so far, 101 degrees at livermore and fairfield. 103 at concord. 108 at aentioch. 105 in ukiah and more tripledigits coming our way. The view from the east bay hills camera and current temperatures. 63 in San Francisco. 73 in oakland. So comfortable in most locations around the bay and near the coast. But as you could see in our inland areas, still sizzling right now. Over 100 degrees in fairfield and concord and upper 90s in other inland locations. Overnight temperatures not decreasing. Of course we wont see hot conditions overnight but remaining mild, especially in the inland areas where temperatures will just drop into the mid60s and low 70s in some locations by 7 00 tomorrow morning and then ready for another warmup tomorrow. Ill give you a look at just how long this heat wave will last in a few minutes. Dan and ama. Thank you, spencer. California is being urged to conserve electricity. They have declared a flex alert for this afternoon and evening. Summer heat is driving up demand for electricity and the state is urging californians to conserve if they can. This the website. The orange line shows Available Power in the state and the blue line is the demand. Peak demand started at 2 00 and will end at 9 00 tonight. And it is day three of the Democratic National convention and more of the partys big names are making their appearance on the podium. Lets take a live look at the Wells Fargo Center in philadelphia where gavin newsom is at the podium and well take a listen in now. Well fight for you. Over the next hundred years. Because no matter what people tell you, that is what america is all about. Thats what makes america great. Thank you all. Lieutenant governor speaking in philadelphia. Both the president and Vice President will speak tonight, pushing for the election of Hillary Clinton. The first female nominee of a major party. Here is abc News Reporter karen travis with a look at todays big controversy. Trump putting the dnc email hack front and center in the race for the white house. Im not going to tell putin what to do. Reporter the campaign and officials pointing the finger at russia for the hack of the dnc email server. Federal officials believe they gave the emails to wikileaks in an effort to influence the president ial election. And in a stunning statement, trump today encouraging russia to do it again. To clintons own server. Russia, if you are listening, i hope you are able to find the 30,000 emails that are missing. Reporter the Clinton Campaign firing back saying trumps comments now escalate what was a political matter to one of national security. And at the dnc tonight, an allstar lineup. President obama, Vice President biden, and clinton running mate tim kaine. Exactly 12 years ago today obama making his National Debut with this dnc key note address as a candidate for senate. There is not a black america and a white america, and latino america, and asianamerica, there is the United States of america. Reporter tonight the president will reflect on where the country has come since then and make his case for why clinton has the experience, toughness and smarts to take his place in the white house. Expect a clear contrast to trump and tim kaine in the biggest speech of his political career. I would expect to hear two things. Which is spanish and scripture, both are regular parts of his stump speech and both a big part of his appeal. There is also a focus on gun violence tonight. Remarks from the families of victims and survivors of mass shootings, including former Congress Woman gabby give orders. Abc news, philadelphia. And the speakers include prominent democrats. And governor jerry brown will address the delegation and expected to speak later in hour. And you just heard gavin newsom and judy chu and Maxine Waters both from Southern California will also speak. A san rafael man is on a mission at the dnc. He arrived in philadelphia this week in a gandhi mobile to spread a message of peace. Reggie aqui is covering the dnc and ran into richardson. So this year who is gandhi puppet support. He is supporter bernie. Do you think he will come around for Hillary Clinton . I mean gandhi puppet. I think so. It is not a vote of conscious, it is a vote of practicality. And then it is back to the gandhi mobile for the trip back to the bay area. He gets reaction from those who see gandhi in the window. Well be live at 5 00. And Laura Anthony and reggie aqui will be there all week for you covering the convention. A site for the president s library has been selected. On jackson park on the chicago south side for the library and president ial center. A formal announcement is expected next week. It is close to the university of chicago where the president once taught and home to the Chicago Museum of science and technology. And still ahead on abc 7 news at 4 00, big flames from a deadly fire. The investigation into what happened this morning on interstate 880. The opportunity is just something that, you know, to do is in a larger venue like, you know, houston, just something you cant say no to. After just a few years, San Francisco unified leader is stepping down and moving on. Where he said still needs to change here. And new at 4 30, changing the focus in the Police Department. Oneonone with San Francisco interim police chief. And taking a look at live traffic at 4 11 this wednesday afternoon. The San Francisco skyway well, it is a mess as you could see. Tic the Highway Patrol is investigating what caused this fiery accident early this morning along 880 in san leandro. A truck hauling motor oil burst into the flames and the driver was killed. Why the driver crashed is still a mystery. Amy hollyfield has the story. Reporter the aftermath is tough to look at. A man died in this crash. The big rig he was driving is hardly recognizable. There was so much damage, investigators didnt even know what he was hauling. It spilled and could be dangerous. Initially we didnt know what it was carrying. Any markings or placards burned up. Reporter here is a look at fire that broke out when his truck hit the concrete divider. The driver was not able to escape and was killed. Investigators havent found any skid marks. There is no indicators of another vehicle being involved yet and there is no vehicle indicators of a brake application or anything being applied before the collision. Often when this occurs, it could be someone falling asleep or having a medical issue. Reporter it happened at 4 00 a. M. On northbound 880 in san leandro. Investigators had to shut down one lane and the davis offramp. They got the debris cleared out and the lane open by 8 00 a. M. But the backup by then was extensive. This is i880 through the east bay so even on a good day traffic is miserable through here. Reporter they estimate that about 1,000 gallons of motor oil spilled here so the hazmat team has to remove and replace all of the soil that absorbed that oil and also flush out the sewer system since some of it spilled down the drain. Amy hollyfield, abc 7 news. Now to some amazing pictures out of napa. The Police Department posted these photos on its facebook page. Could you see the car resting on the support wires of a power pole. Isnt that wild . This caused a brief power outage near comes and imola. The driver is suspected of drink driving and was arrested. San francisco Public Schools are losing their superintendent. That is right. He has accepted a position to lead the School District in houston. He took over the San Francisco unified School District four years ago. Abc 7 News ReporterLyanne Melendez is live with more on his accomplishments and why houston. Reporter this is a man who pulled out of the race for superintendent of los angeles schools back at the beginning of the year. Well, he told me houston on the other hand is a good fit. He said he wants to do some of the things hes done here, but at a larger scale. Houston is the largest School District in texas. Of course, much bigger than San Francisco unified. In between meetings, the superintendent of San FranciscoPublic Schools, richard car anza sat down to discuss the reasons for accepting the houston offer. When the opportunity to go to houston came around, i did my homework. And the work that they are doing around equity and the work they are doing around language, the work that they are doing around meeting the needs of all students. Reporter he recently divorced and said being single again offers him a chance to spend more time at work. A superintendent in the field is worth two in the feet. Reporter hes been known to shadow students and drop in on teachers. During his four years as superintendent, suspension rates went down. His team focused on pouring more resources into underserved communities and he got Silicon Valley more involved in the classroom. He said his greatest achievement has been to increase the Graduation Rates among africanamericans. Besides raising salaries for teachers by 12 over three years, he agreed with the union on how teachers are evaluated. We are able to have a teachers Evaluation System that relies on teachers performance and not on test scores of students. On the lighter side, he is known for his love of mariachi music. And so are you more of a Cielito Lindo person for yes, i could do those kind of songs but a ranchero roromantic. A piece of my heart will stay in San Francisco. Abc 7 news. A drivering Technology Company is cutting ties with tesla. Mobilize said it will no longer work with the care maker. It is used in the crash avoidance system the announcement comes after the system caused a crash in may killing the driver. You are looking at social media by the driver. Tesla said the car auto pilot feature did not recognize the white truck in the bright sun and the stock closed up 5 today. And if you think you seeing a lot of electric cars on the road, you are right. Last month california porch purchased more than the rest of the United States combined. Americans purchased 13,000 electric and plugin vehicles in june and nearly 7200 of them were bought by californians. In fact, since 2010, california has accounted for 46 of electric car sales in the United States. It is official. Apple has sold the billionth iphone. Tim cook made the announcement in cupertino this morning. The picture provided by apple. It is a big deal for any company but a big deal nor the iphone which isnt even 10 years old yet. Yesterday they reported another decline in iphone sales. This year was the first time sales had been down since the iphone debuted. Lets go back outside and talk about really stifling hot weather. Certainly. Lets get to Spencer Christian for the accuweather forecast. Earlier in the week, we were hoping for or expecting a break in the tripledigit heat by the weekend. And now it looks like we may have to wait for the end of the weekend. Here is a look at live doppler 7 hd. We have sunny skies and hot conditions inland. Although it is comfortable where i stand here near the coast as we have the cooling low clouds at the coast as you could see here at the golden gate bridge. The forecast features tomorrow. The fourth consecutive spare the air day. Air quality is declining in some parts of the bay area throughout the week. Wide range of temperatures could be expected through saturday and this intense heat will ease by sunday. Overnight, look for a fog at the coast moving over the bay but not very far inland and low temperatures in a mild range of upper 50s near the bay and low 60s low to mid60s in the inland east bay. So mild and perhaps uncomfortable overnight. Here is the fog forecast animation. Just limited fog around the bay early tomorrow morning, about 7 00. A lot of low clouds and fog at the coastline of course. And so then after 8 00, well see the fog that is out over the bay pulling back to the coastline, giving us another hot day inland. Hazy conditions in the south bay as more smoke from the fires to the south move up into our region. And of course fog will linger at the coastline. High temperatures tomorrow in the south bay will be in the mid to upper 80s down to san jose with a high of 88 and then upper 90s in morgan hill and gilroy and low to mid90s in the los gatos area. On the peninsula, highs of 82 at redwood city and 84 mountain view, upper 50 toss around 60 on the coast and downtown San Francisco a high of 67 tomorrow. Up in the north bay, 91, 87 napa and 76 at oakland. 64 at Castro Valley and the inland will have numerous tripledigits from fairfield to antioch to livermore. And before we get to the sevenday forecast. Air quality once again, i mentioned tomorrow is the fourth consecutive spare the air day. Good near the coast and central bay but the valley will once again have the poorest air quality. Here is our accuweather sevenday forecast. Notice tripledigit heat in our inland areas will not wind down until after saturday. Even on sunday, well still see mid and maybe mid to upper 90s inland but then the temperatures continue to moderate into next week. And although it is warm into next week, the intense heat will have dissipated by then. Dan and ama. Thank you so much, spencer.