No injuries in small fire at Old Post Office building in Chicago

CHICAGO (WLS) -- No one was hurt in a small fire at the Old Post Office building in Chicago.

The massive structure sits above where Congress Parkway meets the Eisenhower Expressway (I-290).

The fire began on the roof and top floor of the vacant building just before 8:30 a.m. Tuesday. It was struck out 45 minutes later.

There were no injuries reported.