CHICAGO (WLS) -- 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 storage unit near a kitchen at the stadium, located at 333 W. 35th St. 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.
Police say it is standard to call the Bomb and Arson Unit in for fires at high-profile locations.
The White Sox said at the time of the fire staff were present at the ballpark, which is staffed 24 hours, but that none was injured.
The Sun-Times Media Wire contributed to this report.