Prosecutors believe Michael Nolan shot and killed a police officer . The suspect was arrested in the early morning hours of July 20 after he allegedly fired at officers from his car while fleeing on foot. There is no criminal record for Nolan -- not even a motor vehicle record .
Prosecutors believe Michael Nolan shot and killed a police officer . Nolan himself is believed to have died in an ensuing fire and explosion . There is no criminal record for Nolan -- not even a motor vehicle record .