Fire officials are working to determine the cause of a deadly fire on Staten Island.

Authorities say it broke out at a home on Hatfield Place near Crittenden Place in Elm Park just before 6 a.m. Thursday. 

A 21-year-old woman who was found inside the house was taken to the hospital, where she was pronounced dead.

The medical examiner will determine the cause of death.

Four firefighters were also hurt.