More than 20 South Koreans were detained in Cambodia for allegedly opening an online gambling Web site, an official said Friday.

Cambodia informed the South Korean embassy about the arrest of the 22 South Koreans, the foreign ministry official said.

Police arrested the suspects and confiscated computers and other equipment when they raided two villas in the northwestern outskirts of Phnom Penh, according to local media reports.

The South Korean embassy dispatched its diplomat to the area to provide the suspects with consular access after being informed of the arrest, the official said.

The official said South Korea plans to ask Cambodia to conduct swift and fair investigations into the case.(Yonhap)