A man was killed while apparently trying to rob two other men Saturday morning, according to police.

Melissa Bujeda, with the Jacksonville Sheriff's Office, said an off-duty officer was flagged down by a man around 3:30 a.m. near the intersection of 13th Avenue and Interstate 95. The man said someone tried to rob him, they got into a gun battle and he believed he shot the robber.

Police found a man dead behind a house near West 13th Street and Thames Avenue. He appeared to have suffered a gunshot wound and officers said a handgun was lying next to the body.

"A witness approached officers and stated that he was with the shooter sitting in a car when a black male approached with a gun and demanded money," said Bujeda. "The witness stated that as he fled, he heard numerous gun shots."

Police said the man who flagged down the officers had a concealed weapons permit and turned over his weapon to police.

Detectives are still investigating and ask anyone with any information about this incident to contact the Jacksonville Sheriff’s Office at 904-630-0500 or email JSOCrimeTips@jaxsheriff.org. To remain anonymous and receive a possible reward, contact Crime Stoppers at 866-845-TIPS.