Authorities say 23 people have been rescued after an overcrowded boat capsized off the Bangladesh coast, but about 50 others are missing.

The boat was reportedly carrying about 70 illegal migrants, mostly Rohingya Muslims, to Malaysia when it sank in the Bay of Bengal early Wednesday.

Border commander Lt. Col. Zahid Hossain says no bodies have been recovered so far.

He quoted several survivors as saying they saw some bodies after the boat sank off Bangladesh's Teknaf coast, 320 kilometers (200 miles) south of the capital Dhaka.

Another coast guard official Lt. Badruddoza says survivors said they were traveling to look for jobs in Malaysia.

No other details were immediately available.