Come forward and tell the family?

There was a man on a motorcycle trying to get away from the police. The police were not aggressively chasing him. Just kind of tailing him, knowing there was nowhere he could go. We live in a very small town. The motorcycle hit a parked car and took out the passenger side window with his head and the bike kicked out from underneath him and hit a pontoon boat. The police and EMT's says that he died on impact, but I know that is not true as well as at least five other people that saw it. He was laying there moaning and looking around while the police and EMT's kept putting a cover over his face. Two people ran up to him and the police told us to back off. This is really bothering me.