Campsie police are investigating a home invasion at Riverwood overnight.
Just after 9pm emergency services were called to a unit in Riverwood after reports someone had entered the home armed with a weapon.
Several people were inside the home at the time.
One of the residents suffered a minor hand injury during a struggle with the intruder who left shortly afterwards.
The resident declined medical treatment and the injury is not considered life-threatening.
The other occupants were not injured.
Police are urging anyone with information to call Crime Stoppers on 1800 333 000.