Fort Worth police were contacted by TRE about 11 a.m. that a man on the train with a firearm was causing a disturbance.

The shooting stemmed from an argument between two men on the train who were waiting to go to the restroom, according to the Fort Worth Police Department.

Stalled on the tracks, a TRE train remained at a standstill in Fort Worth for hours after an argument over using the bathroom went off the rails.