Newly re-elected U.S. President Barack Obama is to visit Yangon later this month, a Myanmar government official said Wednesday, in the latest sign of Washington's support for reforms in the former pariah state.

"Obama will come to Yangon on November 19. He will meet with the President and Daw Aung San Suu Kyi here," the official told Agence France Presse on condition of anonymity, adding further details were unavailable because of security concerns.

Nearly 90 people are missing after an overloaded boat carrying Rohingya refugees towards Malaysia sank off Bangladesh early on Wednesday, the second such tragedy in less than a fortnight, officials said.

Bangladesh Border Guard commander Lieutenant Colonel Zahid Hasan said the wooden vessel was carrying around 110 passengers when it went down around 15 kilometers (nine miles) off the southern Cox's Bazaar coastal district.

Doctors Without Borders said Monday its teams had been threatened and stopped from reaching areas in Myanmar hit by communal bloodshed, leaving tens of thousands without essential health care.

More than 100,000 people have been displaced and dozens killed since June in Rakhine state in two major eruptions of violence between Rakhine Buddhists and Muslims, mainly from the Rohingya minority.

Crammed into squalid camps, thousands of people who fled communal violence in Myanmar face a deepening humanitarian crisis with critical shortages of food, water and medicine, aid workers say.

More than 100,000 people have been displaced since June in two major spasms of violence in western Rakhine State, where renewed clashes last month between Rakhine Buddhists and Rohingya Muslims uprooted about 30,000 people.

Crammed into squalid camps, thousands of people who fled communal violence in Myanmar face a deepening humanitarian crisis with critical shortages of food, water and medicine, aid workers say.

More than 100,000 people have been displaced since June in two major spasms of violence in western Rakhine State, where renewed clashes last month between Rakhine Buddhists and Rohingya Muslims uprooted about 30,000 people.

The World Bank has approved an $80 million grant for Myanmar to support its reform drive, resuming assistance for the former pariah nation after a quarter-century absence.

The money is for infrastructure projects in villages in poor rural areas, the bank said in a statement Friday after its board of directors in Washington approved a new strategy for helping the country formerly known as Burma.

ASEAN Secretary General Surin Pitsuwan has warned that sectarian bloodshed in Myanmar could radicalize minority Rohingya Muslims there and destabilize the whole of Southeast Asia.

Surin called on the international community to help after clashes in the western state of Rakhine between Muslims and Buddhists this month killed at least 88 people and displaced more than 26,000.

Sectarian bloodshed has left at least 88 people dead in Myanmar this month, the authorities said Monday, with more than 26,000 others forced to flee a wave of rioting and arson.

Hundreds more homes were burned down over the weekend as security forces struggled to quell clashes between Buddhists and Muslims in western Rakhine state that have seen whole neighborhoods razed.

Homeless people fled to packed camps or clustered close to their charred houses in western Myanmar Sunday, after deadly unrest that the U.N. said displaced 26,500 from mainly Muslim communities.

Whole neighborhoods were razed in last week's clashes between Buddhists and Muslims in Rakhine state, which has cast a shadow over the country's reforms and put further strain on relief efforts in the region.

At least 56 people have been killed and thousands of homes torched in Buddhist-Muslim violence in western Myanmar, casting a shadow over the reformist government's attempts to remake the country's international image.

People have fled their homes in droves following the latest clashes in Rakhine state, which was rocked by communal violence in June that split communities and left tens of thousands of mainly Muslim Rohingya living in camps.