One person was killed and four firefighters received minor injuries in an apartment fire on the 50th floor of Trump Tower in New York on Saturday, in a blaze that was quickly extinguished, fire officials said.

The victim, a male resident, died at the hospital and has not yet been identified, they said.

US President Donald Trump, who has an office and a private residence in the midtown Manhattan structure, was not in the building at the time.

"Fire at Trump Tower is out. Very confined (well built building). Firemen (and women) did a great job. THANK YOU!" responded US President Donald Trump on Twitter. He has an office and a home in the building, but he was not in New York on Saturday.

Melania Trump and the couple's son, Barron Trump, were both in Washington, DC, according to the first lady's spokeswoman, Stephanie Grisham.

According to local media, the Fire Department of New York is responding to a blaze at Trump Tower.

The fire broke out in multiple units on the 50th floor of the tower shortly before 6 pm. It was knocked down by 6:45 pm, according to the FDNY.

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

At least five fire trucks were seen responding to the fire on Fifth Avenue shortly after the blaze started.

A blaze at the same Trump Tower injured three people, two civilians and a firefighter, in January. The fire started in the building's rooftop heating and air conditioning system and left smoke billowing from the roof.

Reuters, Xinhua contributed to the story.