Manhunt Intensifies for Accused Cop Killer

Police say 29 year old convicted bank robber Tremaine Wilbourn killed Officer Sean Bolton during routine traffic stop.
4:55 | 08/03/15

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Transcript for Manhunt Intensifies for Accused Cop Killer
We look Carol. He's account. You gunned down you've murdered a police officer. To list is to Graham's of Merrill. And intense manhunt today for 29 year old from Maine blew born. He is accused of gunning down a Memphis police officer during a routine traffic stop on Saturday night. Authorities say officer Sean bolting into up to the drug deal and will board who was a passenger in the car being stopped pulled out a gun. Shooting bolting several times hi everyone I'm Caroline Costello in New York to Maine will warn is facing a first degree murder charge. Let's bring in ABC's crime and terror analyst Brad Garrett. He has been following this story for us. More information about what exactly happened Saturday night Wayne Bolton approached a car. On the side of the road shined his headlights into that automobile. Brad if we have you can you break down force what happened Saturday night. Brad breakdown for us what happens Saturday night when will born. And Bolton came face to face. Apparently there was a drug deal going on in a vehicle. Officer approached. A suspect sexed up so vehicle. Some sort of interaction between the two but the long and the short the officer get shot shot multiple times suspect flees. Now there are the people in the car I think that's the real key probably in finding him. Because they're harder and a note news. The place. Does that he hangs out the police the places he goes to hide odds of a suspect is only going to be a matter of time that I find him. We do know that the driver of the car ran off with will warm at any turn himself in. He was released by police even though officers. Say he was a person of interest to you believe he is giving the police a lot of help in finding Welbourn. I think that's exactly right I think that probably one of the keys and finding him. Is the driver. I'm sure they have a history together of some. Sort Caroline keep in mind that. People who commit these top acts that are usually from one town in this case Memphis how many places unity behind how many people will protect them. Fittingly town meet e-book my guess is he's probably still in town in hiding so. Expect them to find him I suspect the next very few days. We know its gates the man what art stories doing today exactly. They're going to all the logical places. That he could conceivably hi Maria has a history. Relatives. Associates. That is he hang out where. Who are the other perhaps the people in the drug world but he deals well all of these people will have pieces of information as to where he potentially might be. Odd this world probably is fairly strong. And rat in that's a plus because there's only so many places he can hide but even if he's left town I suspect. I suspect the trail will be fairly evident as to where he. OK and Brad we know officials say that the drug transaction would have only amounted to a misdemeanor and a fine. So why would will warn react so violently what can you tell us about his criminal history. I and you hear can you hear as an issue where. Sorry. I wasn't sure you could hear me. Continue please. A cancer. And so. You know as a result he panicked for some reason. Maybe body there's going to be taken into custody. Whatever might be in this might be angry at the police and unfortunately this officer happened to be in the wrong place at the wrong time. And he got shot. So you know clearly I don't think it had anything to do with the drug deal itself it had to do. With the shooter. ABC's crime and terror analyst Brad Garrett thank you so much for that you can keep up with this story in real time my gallon ABC news app and storing the story for exclusive updates. On the go. I'm Caroline Costello in New York.

This transcript has been automatically generated and may not be 100% accurate.

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