A truck driver is in critical condition after he was shot during an argument over parking at an Oklahoma City truck stop early Friday morning, authorities say.

The shooting occurred around 4:30 a.m. at a TA truck stop location off of I-40 in southwest Oklahoma City, Oklahoma.

Police say that a truck driver and a security guard began arguing over a parking issue and that after the argument escalated, the guard fired one shot at the truck driver.

The truck driver was taken to a local hospital and is now listed in critical condition.

#UPDATE @OKCPD tell us the driver went from serious to critical condition. The security guard was questioned, but they couldn’t clarify if it was on scene or at the police station. https://t.co/tssNPj5x7K — ShardaagrayKOKH (@FOX25Shardaa) February 14, 2020

News 9 reports that the security guard is being questioned by police.

The incident is under investigation. This is a developing story.

.@OKCPD are still on scene. Crime scene unit just arrived. pic.twitter.com/lQ61A3QVwe — ShardaagrayKOKH (@FOX25Shardaa) February 14, 2020