Authorities say rescue operations are under way to locate survivors on a boat that sunk, with two others missing.

One body has been found and dozens of others are missing after a boat carrying about 90 undocumented migrants sank near the Thailand-Malaysia border, officials said.

The Malaysian maritime authority on Sunday said at least 10 survivors were found, while the status of two other boats carrying a similar number of people remains unknown.

The incident is believed to have happened near Tarutao Island, just north of the popular Malaysian resort island of Langkawi.

“A boat carrying 90 people is believed to have capsized” three days ago, local police chief Adzli Abu Shah told reporters, adding that rescue operations were under way to locate the survivors.

Among the survivors found in the waters were three Myanmar nationals, two Rohingya refugees, and a Bangladeshi man, while the body was that of a Rohingya woman, state media agency Bernama reported, quoting Abu Shah.

The Malaysia-bound people initially boarded a large vessel, but, as they neared the border, they were instructed to transfer onto three smaller boats, each carrying about 100 people, to avoid detection by the authorities, the police chief was quoted as saying.

Dangerous crossings

Malaysia is home to millions of migrants and refugees from other parts of Asia – many of them undocumented, working in industries including construction and agriculture.

Members of the mainly Muslim Rohingya minority periodically flee predominantly Buddhist Myanmar, where they are seen as foreign interlopers from South Asia, denied citizenship, and subjected to abuse. Nearly a million Rohingya refugees live in cramped camps across southern Bangladesh.

Many of these refugees attempt maritime crossings to relatively affluent regional countries such as Malaysia and Thailand, facilitated by human trafficking syndicates. But the trips often turn hazardous, leading to frequent capsizing.

In one of the worst incidents in December 2021, more than 20 people drowned in several capsizing incidents off the Malaysian coastline.