Wasnt Abnormal News Today

United states, she got exposed to a pretty significant amount of lead and that her level before that wasnt abnormal. so her exposure was in this country. it wasnt back in egypt. >> the investigators must have overlooked something, but they didnt know what. >> they went full circle. they went back to manchester. they started saying what did we miss? >> they questioned sundays mother again and were told something they had not heard before. sunday spent a lot of time on the front porch of their apa...

To a pretty significant amount of lead and that her level before that wasnt abnormal. so her exposure was in this country. it wasnt back in egypt. >> the investigators must have overlooked something, but they didnt know what. >> they went full circle. they went back to manchester. they started saying what did we miss? >> they questioned sundays mother again and were told something they had not heard before. sunday spent a lot of time on the front porch of their apartment building. >> translator:...

Deposits build up in the nails and hair. the average persons hair grows about a half inch per month. sundays hair was an inch long. and provided a wealth of information. >> she had spent a month in the united states and before that she had been in egypt. so the by taking her hair and looking at it specifically for lead content, and dividing it in half so that we had the half inch that grew in the united states and the half inch that grew before that, we were able to make a comparison and time he...

To collide, three people who trained in boxing and mixed martial arts. all three are now dead. and key among them is bombing suspect tamerlan tsarnaev, seen working out at allens gym days before the attack. were you surprised by his demeanor 72 hours before those bombs at the marathon? >> unbelievable. just him entering the ring. i mean, you know, like, jumping over, both legs, feet at his shoulder height, clearing the ring, hopping in, jumping rope, like, yeah, like he was on top of the world. ...

Height. clearing the ring. hopping in. jumping rope. like, yeah. like, he was on top of the world. >> reporter: allan trained both tsarnaev and another russian speaker, e er speaker. >> they were polar opposites as individuals. tamerlan was flashy and flamboyant. ibrahim was a bit more reserved, but he was hot headed. there were a few times that ibrahim and tamerlan prayed to mecca in the gym. which wasnt abnormal for ibrahin to do it. he did it from day one. it was abnormal for tamerlan. >> the...

The other was a bit more reserved but he was hot headed. there were a few times that they prayed into gym which wasnt abnormal to do it because he did it from day one but it was abnormal for tamerlan. >> so they were getting closer. >> reporter: he said they trained together in 2011. that same year tsarnaevs friend brendan mess was murdered in a near beheading along with two pals. sources say tsarnaev were involved in the murders. do you believe that tamerlan and maybe the other had anything to ...