NYC apartment building partially collapses, ripping massive hole in high rise

Emergency personnel responded to the partial collapse of an apartment building in New York City on Wednesday morning.

At 8:10 a.m. ET, an incinerator shaft collapsed at the public housing apartment building on Alexander Avenue in the Bronx, NYC Deputy Mayor Kaz Daughtry wrote on X.

A preliminary investigation suggests some type of explosion triggered the collapse, Mayor Eric Adams said at a press conference Wednesday.

Firefighters work near the site of a building collapse in the Bronx borough of New York on Oct. 1, 2025.Eduardo Munoz Alvarez / AP

The FDNY was first notified of an explosion just after 8 a.m.

"When our units got here, they alerted us to a major collapse of a structure attached to this building behind us," Fire Commissioner Robert Tucker said Wednesday at the onsite news conference.

No injuries have been reported at this time.

“There were no fatalities and no injuries as we have learned that this happened in the boiler room,” Bronx Borough President Vanessa L. Gibson said at the press conference.

Video from the scene showed a giant tear along the side of the building.

The partial collapse of Bronx apartment building in the Bronx on Wednesday.Kyle Mazza / Anadolu via Getty Images

"Investigation into the cause is ongoing," Daughtry said in an X post. "Residents in F & G apartments are being evacuated out of an abundance of caution and will be cared for at a nearby community center."

Con Edison has shut off gas in the building in response to the collapse, according to NYC Emergency Management.