The New York City Fire Department (FDNY) is battling a fire

The New York City Fire Department (FDNY) is battling a fire 

Last Updated Apr 8, 2018 7:31 AM EDT

A four-alarm fire on the 50th floor of New York City's Trump Tower left one man dead and six firefighters injured, the FDNY said, the second blaze this year at President Trump's Fifth Avenue high-rise. The cause of the fire is still unknown. 

The NYPD identified the victim as Todd Brassner, 67. 

"The apartment was virtually entirely on fire. They pushed in heroically, they were knocking down the fire, they found one occupant of the apartment on the 50th floor," Fire Commissioner Daniel Nigro said.

The FDNY said that six firefighters suffered injuries. Over 44 units and about 190 firefighters responded.