Authorities are concerned alcohol may have been a factor in the shooting, which involved an off-duty officer. It was at 24th and Chestnut Streets where LMPD says Officer Chauncey Carthan and a man got into a confrontation and Carthan shot the man in the thigh.
Carthan, a detective with the narcotics and intelligence unit, was not in uniform and was in his black, unmarked police car.
Neighbors alerted police.
"He was still holding the weapon on the guy, and he said I'm a police officer. and they said get down, put the gun down. He put it down in the street and he laid down on the street," a witness told WDRB.
"Investigators from the Public Integrity Unit did in fact have concerns about the officer being under the influence of alcohol," says Chief Steve Conrad.
Chief Conrad says that's when they collected evidence at the scene from Carthan to submit to the Kentucky State Police lab for analysis.
He wouldn't comment on what evidence was collected.
Chief Conrad says in the short time he's been police chief with LMPD, Carthan hasn't been reprimanded for anything, but WDRB does know he was back in 2010.
It was then that we once before reported on Carthan, when he was reprimanded for making public statements about a police investigation.
He's now on paid administrative leave for the latest incident while the Public Integrity Unit investigates.
Police plan to soon talk to all parties involved to find out what led up to this shooting.
"That could involve possible criminal charges," says Chief Steve Conrad.
The man who was shot has been released from the hospital.
Police will present this case to the Commonwealth Attorney's Office, and then there will be an administrative investigation into the officer's actions.