An elderly man died late Saturday after a blaze erupted on the 50th floor of Trump Tower in New York which also injured four firefighters, officials said.
The New York Police Department said 67-year-old Todd Brassner was found "unconscious and unresponsive" when officers arrived at the scene.
Mr Brassner - a Trump Tower resident identified by US media as an art dealer - was pronounced dead after being taken to Mount Sinai Roosevelt Hospital, according to police, which said the medical examiner's office would determine the cause of death as part of an ongoing investigation.
"This was a very difficult fire. As you can imagine, the apartment is quite large, we are 50 stories up. The rest of the building had a considerable amount of smoke," the New York City Fire Department (FDNY) said.
It said the four firefighters had "non-life threatening" injuries and that the blaze had been brought "under control."
President Trump tweeted the fire had been put out.
Fire officials have not yet released a suspected cause of the blaze, adding no member of the Trump family was in the building at the time.
New York Fire Department and New York Police Department personnel operate during a four-alarm fire that broke out Source: AAP
About 200 fire personnel responded to the incident that the department said was a four-alarm fire.
Video on social media showed flames outside of a few windows and black smoke billowing up from the high-rise.
In January, three people were injured in an early-morning fire at the top of Trump Tower. One firefighter was hospitalised while two people received minor injuries that were treated at the scene, the New York Fire Department said.
In addition to the president's 66th-floor penthouse, Trump Tower houses the headquarters of the Trump Organisation as well as other residences, offices and stores.
