One person has died as a result of the massive fire that broke out on the 50th floor of Trump Tower in New York City Saturday afternoon.

FDNY Commissioner Daniel A. Nigro said the apartment was “entirely on fire” when firefighters entered, where they found one man unconscious. The man was critically injured, and has later died.

Four fighters were also injured fighting the blaze, which was later described by the fire department as a 4-alarm fire.

Statements posted on Twitter from the New York Fire Department:

We found fire on the 50th floor of the building. The apartment was entirely on fire. Members pushed in heroically, they were knocking down the fire and found one occupant of the apartment who is in critical condition -#FDNY Commissioner Nigro gives update on 721 5th Ave 4th alarm.

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. 200 Firefighters and EMS members are on scene -#FDNY Commissioner Nigro gives update on 4th alarm, 721 5th Ave MN.

We had many floors to search, and stairways, and right now the only civilian injury is to the occupant of that apartment. There are four Firefighters with non-life-threatening injuries -#FDNY Commissioner Nigro gives update on 4th alarm, 721 5th Ave Manhattan.