Thirty-two women and three men were arrested in Wan Chai in Hong Kong on Tuesday for working illegally.

Acting on a tip-off and after a thorough investigation, an operation code-named “Champion” was carried out by officers from the police force, immigration department and labor department in Wan Chai on Hong Kong Island on Tuesday morning, the Oriental Daily reported.

A total of 35 people aged between 17 and 54 – 29 mainland Chinese women, three South Asians, two Vietnamese illegal immigrants and one female asylum seeker from Indonesia – were arrested during the raids.

They were arrested for illegally working, illegally entering the city and using forged identification documents. A 32-year-old Hong Kong woman and a 54-year-old Hong Kong man were also arrested for illegal employment.

According to the Immigration Ordinance, illegal immigrants are prohibited from taking any employment, whether paid or unpaid, or establishing or joining in any business. Offenders are liable upon conviction to a maximum fine of $50,000 (US$6,369) and up to three years’ imprisonment.