Perth man sought for 'one-punch' attack

A 27-year-old man is being sought by WA Police over an assault that left another man fighting for his life with critical head injuries.

The assault, believed to be a one-punch attack, occurred at the Silver Sands Tavern in Mandurah about 4.30pm on Tuesday.

Police have released photos of Jake Raymond Mosley, who is known to frequent the Mandurah and Fremantle areas.

He has fair skin, is 188cm tall, of medium build, with short brown hair and brown eyes, and was last seen wearing a white singlet, black shorts with a white stripe down the side and white sneakers.

The victim, also 27, is at Royal Perth Hospital in a critical condition.