Man stabbed at front door in Sydney

A man was stabbed on the front door of his Sydney home, after opening to a loud knock.

At about 6pm on Sunday, the 41-year-old man was stabbed several times in the torso by a man in a hooded jumper after answering the front door of his Castle Hill home. The attacker then left with two other men.

The injured man has undergone surgery for multiple stab wounds and remains in hospital in a stable condition.