attack on texas cartoon contest. one of the big questions will the twitter trial lead to anything other than the gunman and isis? jonathan hunt is live in texas. jonathan? greta, the digital trail leads in several directions right now. but investigators are looking at one in particular. twitter communications between elton simpson the ringleader of the attack here in garland and a man called muhammad hasan originally from minnesota now believed to be in somalia, fighting alongside isis affiliated groups. days before the attack here in texas,-month-old hasan using the twitter handle. referred to the terrorist attack and wrote the brothers from the charlie hebdo attack did their part. it s time for brothers in the u.s. to their their part. now, obviously days after that elton simpson and that dea sufi cared out their
tools to work with. we take you inside the nypd s closely guarded crime lab, a frontline for capturing criminal. it shows detectives a clearer picture. so do evolving computer programs adding greater detail to tracing ballistic evidence. advances in dna analysis are widely considered the most meaningful step forward towards solving more crimes. but the forensics are just pieces of the increasingly elaborate puzzle. you really can t escape the cameras. they re virtually everywhere. windows that can capture potential crimes. and with evolving facial recognition technology they could be used to capture more suspects. but we re all leaving our very own well marked digital trail. from electronic data embedded in many of our digital images to our cell phone records, electronic banking transactions and all that social media activity, it s the indelible diary. what they had not planned in advance about being a fugitive
five people are dead from injuries related to a suspected tornado in woodward, oklahoma. and the kansas governor has declared a state of emergency. let s go to susan candiotti in wichita. i m wondering whether the early warnings in the region that you are in right now might have helped the situation. reporter: i can t imagine that they didn t, howie. they had to have played a huge role in that. after all, this is the first time i think since 2006 that they were able to give people who live in this region at least two days warning to be prepared for the storm. now, certainly it may have helped in many instances, but tornadoes, you know, can hit at random, but you can t help but think that it did help some people to be better prepared for the storm. weather system the weather forecasters doing their job. this is not over, and so at this point what s our information on where the greatest threats may lie in terms of other communities that might be struck by these twisters?