Rescuers in west Australia search for man after shark attack

Search and rescue vessels patrol off Port Beach in North Fremantle, Western Australia (Richard Wainwright/AAP Image via AP)

Rescue services in western Australia were searching for a man who was attacked by multiple sharks, police said.

Two teenagers on a boat saw what they believed was a shark attack at Port Beach in the North Fremantle suburb of Perth on Saturday morning and alerted other swimmers to get out of the sea and called emergency services.