(AP)-- Rescue efforts continue off Papua New Guinea's east coast after a ferry sank with as many as 350 people on board.
An Australian Maritime Safety Authority spokeswoman says at least 238 people have been rescued.
Papua New Guinea Prime Minister Peter O'Neill says the cause of the accident is unknown.
Police say the ferry had mostly students and trainee teachers on board.
The Australian Authority's spokeswoman says the first rescue airplane to reach the scene, 10 miles offshore, threw several life rafts to survivors in the water.
The Australian Prime Minister called the incident a "major tragedy."
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