Dozens have been reported missing, feared drowned, after a boat packed with Rohingya Muslims fleeing violence in Myanmar and trying to reach Bangladesh sank in a border river, according to the AFP news agency.

A Bangladeshi fisherman told AFP that he had rescued on Monday one woman, who told him that the "overcrowded" boat had sunk in the Naf river, after it was chased by a Myanmar army speedboat.

"We heard a woman's desperate cry for help in the morning while we were fishing in the Naf. We quickly paddled to the spot and saw she was fighting to stay afloat," fisherman Suman Das said by phone.

"The woman told us that their boat was overcrowded with Rohingya villagers who tried to cross the river to enter Bangladesh."

The woman did not know what had happened to the others, and Das could not say how many people were on the boat.

But the private UNB news agency, quoting a Bangladeshi village councilor, said there were at least 31 Rohingya on board.

A Rohingya source told AFP by phone that the bodies of 13 women and children, two of whom had bullet wounds, had washed ashore in his village on Myanmar's side of the Naf.

This could not be independently confirmed, however, and Bangladesh police and border guards said they were not aware of the incident.

An estimated 30,000 Rohingya have been forced to leave their homes since a bloody October crackdown by the Myanmar army in the western Rakhine state, where many of them live.

At least 10,000 have arrived in Bangladesh, the United Nations said last week, although Bangladesh said it has prevented large numbers from entering.

Myanmar has denied allegations of abuse, but has also banned foreign journalists and independent investigators from accessing the area to investigate.

PHOTO CAPTION

Migrants believed to be Rohingya rest inside a shelter after being rescued from boats at Lhoksukon in Indonesia's Aceh Province May 11, 2015. REUTERS

Al-Jazeera