Man dies after unit blaze as police investigate cause

Emergency services were called to the unit block about 3.30pm on Monday, with Fire and Rescue NSW able to extinguish the blaze a short time later.

Fire Investigation and Research unit officers are investigating the cause of the apartment fire. (Steven Markham/AAP PHOTOS)

The 45-year-old man was located inside the unit and treated on scene by NSW Ambulance paramedics for significant injuries.

He was taken to Royal North Shore Hospital in a critical condition and later died.

An investigation is underway into the circumstances surrounding the fire. However, the cause is not yet known.