Live updates on Brooklyn building collapse: Dangerous search for survivors continues in New York

The three-story building collapsed onto an adjacent construction site, trapping several people in the building and at the construction site, said Lillian Bonsignore, New York City Fire Commissioner.

Fire and emergency units responded within a minute of the first 911 call at 4:01 p.m., and more than 250 firefighters and emergency personnel are operating at the scene in coordination with other city agencies, the commissioner said.

“We have been working for hours to do everything we can to help everyone who may have been injured in this collapse. We don’t know how many people are still in the collapse area, and this will be a prolonged operation,” Bonsignore said.

The cause of the collapse is under investigation, the commissioner added.