Two crew have been taken from a Korean heavy-lift vessel off the Philippines.

A ship named as Dong Bang Giant was attacked by suspected Abu Sayyaf militants off Bongao in Tawi-Tawi, the Armed Forces Western Mindanao Command said on Friday.

The ship's captain, Park Chul Hong, and a Filipino crew member, Glenn Alindajao, were taken by 10 armed men on Thursday.

Korea's Dong Bang Transport operates a fleet of heavy-lifters called Dong Bang Giant No.