India, Sept. 3 -- At least 800 undocumented immigrants, including 377 Bangladeshi nationals, were detained during a special operation conducted by Malaysia's Immigration Department in Bukit Bintang area, media reports said on Wednesday.

The integrated "Ops Belanja" operation, conducted from 7:30pm to 10:30pm, targeted undocumented migrants following weeks of public complaints, Immigration Department Enforcement Division Director Basri Othman told The Daily Star.

During the raid, officials also uncovered an online gambling den.

A CCTV was also present at the venue to monitor the situation.

"When the authorities broke down the door of the premises, seven foreigners were still busy engaged in online gambling, unaware of the presence of t...