COLUMBIA, S.C. (AP) — An off-duty police officer in South Carolina was charged with murder Wednesday after state investigators said he shot a man trying to drive away after the two fought in a fast food restaurant parking lot.

Anthony DeLustro told investigators he was trying to stop the man from leaving after the fight and had gotten into the passenger seat of the victim’s car as the man told him to get out and began driving off, according to a sworn statement from the State Law Enforcement Division.

DeLustro, 64, said he shot Michael O’Neal because he feared he might get trapped under the moving vehicle, but state agents said someone restraining DeLutro after the fight heard him threaten to shoot the 39-year-old man if he tried to leave.

O’Neal never had a weapon or threatened to use a weapon during the fight, which involved kicks and punches in the parking lot of a Chick-fil-A in Summerville on March 20, state agents said.

Court and jail records did not indicate if DeLustro has an attorney. Summerville Police said they fired the officer. He had started his career with police in New York City before moving to South Carolina in 2007.

If convicted of Murder, DeLustro faces 30 years to life in prison.

Before DeLustro’s arrest, O’Neal’s family released a statement on a Go Fund Me page saying they were optimistic that state police would find the truth.

“This is a family that has a great deal of respect for law enforcement in general, yet is fully aware that no profession is free of bad actors,” they wrote.

State agents didn’t detail why O’Neal and DeLustro started fighting, but said DeLustro initiated the altercation, yelling at O’Neal “do you want to do this?” and using an anti-gay slur.

DeLustro, who was not working that day, told O’Neal he was under arrest during the fight and showed him his law enforcement credentials, agents said.

During the fight, DeLustro’s gun fell out of its holster and the officer’s wife tried to hold O’Neal during the fight and as he tried to get into his car, according to the sworn statement.

Someone was holding DeLustro back as O’Neal tried to leave, but DeLustro got away, grabbed his gun off the pavement and then got into O’Neal’s car, state agents said.

DeLustro told agents he was acting in self defense, but investigators said he recklessly put himself into danger and O’Neal was not a threat when he was killed.