A shark killed a man at eastern Australia’s popular Byron Bay despite a beachgoer’s brave rescue attempt, police said.

Treacherous weather conditions in Byron Bay are hampering efforts to find a missing Irishman in Australia.

Crews searching for an Irishman who went missing while surfing off Australia’s coast since Saturday morning thought a helicopter sighting had yielded a clue to his whereabouts, only to find it was a false alarm.