Residents evacuated over Sydney unit fire

A unit block in Sydney's west had to be evacuated in the middle of the night after a fire broke out.

A unit on the 12th floor of the building in Merrylands was well alight when emergency services were called about 1.25am on Saturday.

The occupants of the unit as well as several residents were evacuated from the block as firefighters put out the blaze. The cause of the blaze is yet to be determined.

Burford Street remains closed.