Dhaka, April 15 -- At least 250 people, including Rohingya refugees and Bangladeshi nationals, are missing after a boat sank in the Andaman Sea while heading to Malaysia, according to the United Nations refugee and migration agencies.

The UNHCR and International Organization for Migration said the boat departed from Teknaf in Cox's Bazar carrying many passengers when it reportedly sank due to heavy winds, rough seas and overcrowding.

The exact timing of the incident remains unclear. However, on April 9, a Bangladesh-flagged vessel rescued nine people who were found "clinging to drums and wooden debris" to stay afloat, according to the Bangladesh Coast Guard.

Bangladesh Coast Guard spokesperson Lt Com Sabbir Alam Suzan told the media on...