PITTSBURGH, PA — A man was injured Friday night at the Three Rivers Arts Festival in downtown Pittsburgh when a propane tank overpressurized and caught fire, authorities said.

According to Pittsburgh police, the incident happened around 5:20 p.m. at the festival’s food court, located at Fort Duquesne Boulevard and 8th Street. Initially, authorities thought the propane tank exploded but later determined it had overpressurized.

The man — a 28-year-old food service employee working at one of the vendor tents — suffered second-degree burns to his arms and lower legs, police said. Pittsburgh EMS took him to an area hospital, where he was in stable condition.

The incident, which investigators determined was accidental, briefly closed area roads near the festival. The food court remained closed until the Allegheny County Health Department could decide if it was safe to reopen.

All festival entertainment and exhibitions will continue as scheduled, police said.