PORTLAND, Ore. (AP) — At least two fires broke out at Portland’s Immigration and Customs Enforcement building during a demonstration Saturday night but the building itself was not set on fire, officials said.

Portland police responded to the building to help after the Federal Protective Service, which provides security at federal buildings, reported that a group outside the building was starting a fire, police spokesperson Sgt. Kevin Allen said. Officers found at least two fires when they arrived, including one that appeared to be against the building, he said.

However, Portland Fire & Rescue said the building itself was not set on fire, KPTV-TV reported.

Photos and video from independent journalists who were at the protest show a small fire burning on the ground outside the building and a fire that appeared to be burning on plywood set up around the building.

Both Portland police and the Federal Protective Service said no arrests were made. Police provided security for firefighters as they extinguished the fires, Allen said.

In a statement, the Federal Protective Service said the incident was under investigation.

“The DHS Federal Protective Service thanks the Portland Fire and Emergency Services for their support in extinguishing the fire,” it said.