Todd Brassner, 67, was in his apartment where the fire started. He died after being transported to Mount Sinai Roosevelt Hospital in critical condition, an NYPD source tells DailyMail.com. He was residing in apartment 50C.
The FDNY tells DailyMail.com six firefighters also sustained non-life threatening injuries.
During a press conference at the scene, FDNY Commissioner Daniel Nigro said 'the apartment was virtually, entirely on fire' when firefighters arrived.
At 6:42pm local time the president took to Twitter to share: 'Fire at Trump Tower is out. Very confined (well built building). Firemen (and women) did a great job. THANK YOU!'
When asked if the president's assessment of the building being well built was accurate, Nigro said, 'It's a well built building. The upper floors, the residence floors, are not sprinklered.'
Fire sprinklers were not required in New York City highrises when Trump Tower was completed in 1983.
Hours later the president made no mention of the deceased resident on his Twitter.