david crawford's heart stopped beating at 5:34 a.m. sed of the ax and crawford's wallet, but for some reason kept the flashlight. to establish an alibi, jones made sure his sister and her boyfriend heard him taking a shower around 6:00 a.m. in an attempt to further shore up his alibi, jones went to his cousin's house at 7:30 that morning, and he arranged to find crawford's body with his cousin there as a witness, hoping the discovery would eliminate him as a suspect. but jones didn't know about the pacemaker. had he waited to call police just a little while longer, the pacemaker's memory would have been lost long before the autopsy. >> had an excellent alibi. it is possible that in a court of law, he may have been found not guilty in that there was insufficient evidence. this was the absolute perfect evidence to put away this man. >> this case marked the first time in the world that data from a pacemaker was used in a murder trial. in october of 2001, ivan jones was convicted of murder and sentenced to 20 years in prison. the pacemaker

david? mr. crawford: -- mr. mccraw: i think so.f all, i want to thank everyone who set this up, this is an honor for me to be with these brave people. my connection to this topic came about because in 2008, 1 of our reporters was a kidnapped and i became the person who was designated to run the response to that and work with his family and the government. and a that was followed by another kidnapping and then the detention of four reporters and -- in libya. as a result of all that, i was -- it was such an unpleasant experience, i committed a lot of time to how can we avoid -- avoid being in that position in the first place. i spent time with working with people on security. and the government question, it is clear from those expenses that the government should do better. diane and john and i talked earlier, their experience as a family actually is not that different from what we experience, even though we had access. the new york times, a powerful institution, we know people and we can get people to come to the phone, and still, th

the area around south park avenue and crawford road is still shut down at this hour. that's where "action news" reporter david henry is now live. david, what are the conditions right now? >> reporter: jim, this very busy avenue of south park avenue normally very busy is closed right now, has been for over 12 hours as the cleanup work continues back there. , see what looks like a snow flurry as workers continue to gather up that white powder that was spilled on the road. now, this is a multilevel investigation involving the local police and county investigators because it was a fatal accident, this is being treated like a crime scene. >> it could potentially lead to criminal charges. >> reporter: this violent collision sent shock waves through the neighborhood just before 6:00 this morning. investigators continue to piece together the exact sequence of events. initially it appears the trailer of a tractor-trailer rig broke weigh as the truck rounded a curve an oncoming tanker truck plowed right into it. the driver of that truck was killed. the other driver was uninjured. police are also looking into the possib

the area around south park avenue and crawford road is still shut down at this hour. that's where "action news" reporter davidd, what are the conditions right now? >> reporter: jim, this very busy avenue of south park avenue normally very busy is closed right now, has been for