Police are investigating allegations that an Alabama prison system employee pulled a gun on another motorist in a fast food drive-thru lane.

The employee, who hasn’t been publicly identified, works at Limestone Correctional Facility, according to Al.com. A prison system spokeswoman said the employee has been placed on mandatory leave because of the incident, which a police report said happened Friday at a Chick-fil-A drive-thru.

The prison employee was accused of shouting when a vehicle didn’t pull forward in the drivethru line — and then showing off a pistol when someone stepped out of that vehicle, according to the Madison police.

Officials with both the police department and the Alabama Department of Corrections said their agencies are investigating the incident.

Corrections department spokeswoman Samanta Rose said in an email Monday that the employee was put on leave, and “further corrective action is pending the results of our investigation.”