PHILADELPHIA (CBS/AP) – For the second straight day, a fire broke out at the former Inquirer building that will soon house Philadelphia’s police headquarters.

Black smoke poured from the roof of the building on 15th and Callowhill Streets Wednesday around 8 a.m.

Crews blocked surrounding streets, causing traffic jams in the middle of the morning rush.

There’s no word on the cause, but a spokesman says initial reports show the fire started inside the building.

Capt. William Dixon says there was a small fire on building’s roof on Tuesday that started in the HVAC system.

No injuries have been reported.

The city announced plans last May to relocate police headquarters to the building, but an exact move-in date hasn’t been revealed.

(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)