The Chinese police said on Friday that 235 workers, including 51 South Koreans, connected to a giant voice phishing network were arrested on charges of fraud.

According to the police, those arrested in five provinces were accused of having placed more than one-thousand-200 calls and taking more than 100 million yuan from the recipients of the fraudulent calls.

The group had hired South Koreans or Korean-speaking Chinese to randomly call citizens in South Korea under the pretext of the Central Prosecutors’ Office in Seoul, and coaxed bank account information out of their victims.

A statement issued from the Chinese police said other groups engaged in similar illegal activities were moving their operations to Taiwan and Thailand as the police crackdown continues.