Beyond Kaufmann News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> he also had his arm in a sling when law enforcement came to talk to him and his excuse was he had frozen shoulder, and wasn't able to use his right arm. >> reporter: he even took a gunshot residue test at his house and passed. and after the mclelland murders, investigators checked whether he owned a ford crown victoria, the car captured on video lurking near the mclelland murder scene. records showed he did not. the case was still stalled. but soon, the task force would get one of those lucky breaks they'd always hoped for. it came out of the blue and gave the investigation some much-needed...

Where they are, is there anything unusual or specific about a case that would give someone a cause to have a grudge. >> reporter: four weeks in to the investigation, a tip came in to the county crime stoppers anonymous tip line that looked like a big break. >> the tipster said they have been in a bar in a small town in kaufmann, and overheard two white males talking about the killing and taking responsibility for it. >> reporter: the tip lacked the kind of detail that investigators needed to follow-up. and using the crime stoppers system, the tipster remained anonymous. if this was going to be...

Three months before mark's murder, they announced that 34 gang members had been indicted for racketerring and thanked the kaufmann county d.a. office for their role in the investigation. >> people were trying to put two and two together with the arian brotherhood. >> reporter: it's one thing if it's one individual that went after mark and it's another thing if it's the arian brotherhood. >> oh, yeah, prosecutors across the state were terrified. hey, if this is the arian brotherhood, we are all targets. >> reporter: and then seven weeks later, another assault on law enforcement. it looked like ...

>> this is cell phone video of thursday's shootout. >> reporter: what grabbed the attention of investigators in the mark hassie murder is this, wise county is 100 miles from kaufmann, could he have killed another public servant in texas? seven weeks earlier? >> the fbi is now investigating this case, they want to see if ebol is connect to mark hassie's murder. >> reporter: two public officials gunned down in two states. somebody seemed to be targeting law enforcement at point blank range. coming up: as the investigation grows more urgent, sudden concerns about d.a. mike mcclell mcclelland and ...

Because of mark. and so are we. the world lost a good man. somebody who was resolute, always knew that the difference between right and wrong and would fight for that. >> reporter: now, special prosecutors toby and bill along with a multi-agency task force were fighting for mark. searching for his killer, but not coming up with easy answers. because he was so close to his friend and employee, d.a. mike mcclelland had to bow out of the investigation. they were doing what they could. opening their files to investigators. >> anything that anyone can think of they are looking for. >> reporter: che...