Dhaka: Security forces have killed at least four militants, including a woman, who were holed up in a residential building in Bangladesh's Sylhet city, a military spokesman said on Monday.

Brigadier General Fakhrul Ahsan, a spokesperson of the operation, told journalists at a press briefing that they found four bodies inside the building. "We've recovered two bodies and contemplating options to recover the two other bodies with suicidal vests," Xinhua news agency quoted Ahsan as saying.