He should have called the cops, not run, and refused to say anything to anybody until he was represented by counsel.
In my CCW class I learned that. It would be hard for me to do, instinct is to talk..and the instructor also told us, we should already have an atty at the ready BEFORE anything ever happens and have his number on our cell phone.
Reminder to self: follow through with this tomorrow and get an atty. to have ready ( why do people get good advice and then not follow through...ha)