A man was killed after several portable toilets caught fire outside the NFL’s Baltimore Ravens’ stadium in Maryland on Sunday, officials said.

A security guard at the M&T Bank Stadium called police around 3 p.m. Sunday after noticing a man on fire running from one of the outdoor toilets before collapsing, WALB reported.

“From what we were told, the security guard saw him running from the porta-potty; his body was physically on fire,” Baltimore fire spokeswoman Blair Adams told WALB.

When firefighters arrived, they noticed three portable toilets on fire. The man was pronounced dead at the scene, officials said. Police said Monday that no foul play is suspected in the blaze, the Baltimore Sun reported.

The cause of the fire is still under investigation.

“We’re unclear what he was doing inside of the porta-potties at this time, if he was walking by or whatever the case, but that will be part of the investigation,” Adams added.