A man who flagged down Jacksonville police to report a shooting also said he thought he was responsible.

An off-duty officer was flagged down Saturday around 3:30 AM by a man who says someone tried to rob him.  He says they got into a gun battle and he believed he shot the robber.

Police found a deceased black man behind a house at W 13^th Street and Thames Avenue.  He appeared to have suffered a gunshot wound and there was a hand gun lying next to the man.

A witness says he was sitting in a car with the shooter when a man approached with a gun and demanded money.  The witness fled but as he did so heard gun shots.

The shooter had a concealed weapons permit and turned his weapon over to police.