FDNY officials say a man has been killed in in a raging apartment fire at Trump Tower in New York City.

Fire Commissioner Daniel Nigro says a 50th-floor apartment at the midtown tower was “virtually entirely on fire” when firefighters arrived after 5:30 p.m. Saturday.

Fire officials say a man who was in the apartment was taken to a hospital and later died. Four firefighters suffered minor injuries.

President Donald Trump tweeted earlier that the fire was “Very confined (well built building).”

Trump’s business is based at Trump Tower and his residence is there, but he has spent little time in New York since taking office.

Nigro says no member of the Trump family was at the building on Saturday.

He says about 200 firefighters battled the blaze.

Videos on social media show thick, black smoke and flames rising from the building as people watch below.

Fire at Trump Tower is out. Very confined (well built building). Firemen (and women) did a great job. THANK YOU!

— Donald J. Trump (@realDonaldTrump) April 7, 2018

Trump’s son, Eric Trump, also took to Twitter to thank firefighters and police for their quick response.

“Thank you to the amazing men and women of the NYFD who extinguished a fire in a residential apartment at @TrumpTower. The @FDNY and @NYPD are truly some of the most incredible people anywhere!”

Thank you to the amazing men and women of the NYFD who extinguished a fire in a residential apartment at @TrumpTower. The @FDNY and @NYPD are truly some of the most incredible people anywhere! 🇺🇸🇺🇸

— Eric Trump (@EricTrump) April 7, 2018

#FDNY members are on scene of a 3-alarm fire at 721 5th Ave Manhattan. There are currently no injuries reported pic.twitter.com/PKuPZBu70E

— FDNY (@FDNY) April 7, 2018

Smoke plumes. #trumptower #fire pic.twitter.com/efwi6kfhEK

— Michael J Lukiman (@michael_lukiman) April 7, 2018

Fire in Trump Tower worsening pic.twitter.com/6T1VsOCsuP

— Peter Thomas Roth (@PeterThomasRoth) April 7, 2018