JACKSONVILLE, Fla. -- Police are searching for three men -- one of them likely suffering from a gunshot wound -- after an attempted robbery at an Arlington used car lot.

Channel 4 was told that the three men came into the office of Nino Auto Sales on Atlantic Boulevard about noon Monday and demanded the wallet from a mechanic.

Instead of handing over his money, the employee wrestled a gun away from one of the robbers and fired a shot, police said.

The employee told his boss, Carlos Antezana, he thinks the bullet hit one of the robbers in the side, but police aren't sure.

"I do know there was a struggle over the gun," Jacksonville Sheriff's Office Lt. Mike Beckmann said. "I don't know if he got it completely away from him, but one shot was discharged."

Police said the three attempted robbers took off. Police spend the afternoon searching for them using ground officers, K-9 teams and a helicopter.

"I hope everything turns out OK and they can catch the people," Antezana said.

Police said a man who showed up with a gunshot wound at Shands-Jacksonville Medical Center Monday afternoon is considered a person of interest, but the search for the robbers is ongoing.

Anyone with any information about the robbery or robber is asked to call Crime Stoppers at 866-845-TIPS.