The demolition of the former Deutsche Bank building has been suspended yet again after two firefighters were injured by a steam pipe from the building that fell through the roof of their firehouse next door.

The accident occurred at around 7 a.m. yesterday and officials said they could not yet say what triggered the fall. The steel pipe, which was used to conduct steam, is about three inches in diameter, and the portion that pierced the roof of the Engine and Ladder 10 building was about 15 feet long, authorities said.

Officials said the pipe carried no contaminated materials and that the firefighters suffered only minor injuries from dust and debris.

Still, the Buildings Department is proceeding with caution in what has become a routine procedure