(CHICAGO) Chicago Police Bomb and Arson Unit detectives are investigating an early Friday fire at U.S. Cellular Field that left a firefighter injured.

The fire was reported about 2:25 a.m. in a first-floor kitchen or office of the stadium, located at 333 W. 35th St., according to Fire Media Affairs. It was out shortly after 3 a.m.

The firefighter was taken to Mercy Hospital and Medical Center with injuries that were not thought to be life-threatening, according to fire media.

The Chicago White Sox are scheduled to play their season home opener Friday afternoon.