An extensive search operation is underway on the Swan River for a missing 30-year-old man who fell from a boat into the water.
Water Police have been joined by officers patrolling the riverbanks around Ascot in search for the man fell overboard at about 5:10pm.
Witnesses found the boat doing circles in middle of the river without anyone on board.
Police, paramedics and the police helicopter have been involved in the search.
He was piloting the vessel alone when he fell in, a police spokesman said.
More to come.