"Houston denied firing the fatal shot and told police he did not know who had a gun and did not know any of the other people in the getaway car, according to the probable cause statement."

Honestly officer, I was just out for a walk, reading the Bible, and minding my own business when these guys in a car offered me a ride.  I didn't know any of them or what they were up to, but I was tired of walking so I accepted their offer.