UPDATE: Police have revealed details of the men on board the boat and announced they resumed searching at 6am this morning.

On board the vessel was a 50-year-old man of Coodanup who is the boat owner, his brother (believed to be in his 40s), the boat owner’s 24-year-old son and another family member, a 31-year-old man.

Police will today continue the search for the missing fisherman, which began around 10.30pm overnight.

EARLIER: A marine search and rescue is currently underway between Cockburn Sound, Fremantle and Rottnest Island after four men failed to return from a fishing trip.

Family members of the men contacted police around 9pm yesterday night after they had failed to return from their trip to Rottnest.

They had left Cockburn Sound the night before in a white 5.5m boat. No emergency calls have been received from any of the occupants on board.

Water police, volunteer sea rescue groups, Rottnest rangers and local police have conducted overnight searches for the vessel without success.

Water Police have asked anyone who may have been boating at Rottnest Island yesterday and observed a white vessel with four people on board to contact them.

The search will continue this morning.