(May 15): Another 700 Rohingya and Bangladeshi migrants were rescued off Indonesia today, police said, as Myanmar undermined calls for a coordinated response to the human-trafficking crisis by threatening to boycott a planned Southeast Asian summit.

Indonesian police said passengers aboard the latest vessel seeking safe harbour in the region recounted how their boat sank off the country's coast after earlier being driven away by Malaysia.

Activists estimate up to 8,000 migrants are at sea in Southeast Asia.

But the decision by Indonesia, Malaysia and Thailand to turn away stricken boats filled with starving Bangladeshis and ethnic Rohingya from Myanmar has been met with outrage, including from the US and UN.

"According to initial information we got from them they were pushed away by the Malaysian navy to the border of Indonesian waters," said Sunarya, police chief in the city of Langsa in Aceh province, where the migrants arrived.

The boat was sinking but Indonesian fishermen ferried them to shore, he said. Nearly 1,300 migrants are already sheltering in Aceh after fetching ashore in recent days.

Earlier Friday, another boat carrying about 300 Rohingya – a persecuted Muslim minority in Myanmar – left Thailand's waters, a Thai official said, after authorities repaired its engine and provided some food.

The boat's passengers included many children and women who wept as they begged for food and water, after arriving near the southern Thai island of Koh Lipe yesterday.

They told a boatload of journalists of a grim two-month odyssey in which 10 passengers had died of starvation or illness and were tossed overboard.

"We haven't had anything to eat for a week, there is nowhere to sleep... my children are sick," said Sajida, 27, a Rohingya who was travelling with her four young children. – AFP