Four hurt by attackers in violent Sydney home invasion

Four people have been taken to hospital after a violent home invasion in Sydney's west overnight.

Police are looking for up to four people after the assault, which took place at a home on Norman Street in Merrylands at about 9pm.

Several people were in the residence at the time.

A man has received blunt trauma wounds to the face and head, while reports from the scene indicated a younger male had suffered a black eye.

The victims were treated at the scene and taken to hospital with non-life threatening injuries.

Anybody with any information is urged to contact CrimeStoppers on 1800 333 000.