The raids, conducted over the weekend in the city of Poipet, found 230 foreigners, including 123 Thais, after a three-month investigation, the Cambodian National Police said in a statement.

"These foreigners were operating illegal online (activities) with Chinese nationals as ringleaders," the statement said, adding they accepted the "illegal work" voluntarily.

It said Cambodian police were working with their Thai counterparts regarding the Thai nationals to identify ringleaders.

Cambodian police were also questioning other foreigners and would take further legal measures against them, it added.

The raids come as Thailand, Cambodia, and Myanmar crack down on illegal scam centres which have multiplied across Southeast Asia in recent years.

Myanmar and Cambodia have been favoured locations for the centres in an industry worth billions of dollars a year.

Thai Foreign Minister Maris Sangiampongsa held talks in Myanmar over the weekend with his counterpart Than Shwe as well as junta chief Min Aung Hlaing, which included the scam centre problem.

Many workers say they were lured or tricked by promises of high-paying jobs before they were effectively held hostage, their passports taken from them while they were forced to commit online fraud.

They say they suffered beatings and other abuse at the hands of their supervisors, and AFP has interviewed numerous workers freed from centres with severe bruising and burns.

Around 600 Chinese workers were repatriated from Myanmar scam centres last week, while the week before a local militia handed over 260 workers from a dozen countries, including the Philippines, Ethiopia, Brazil and Nepal, to Thailand.