Immigration officers have arrested 18 illegal workers and their three employers in an anti-illegal work crackdown.
They raided 15 locations including restaurants, stalls, a factory and units under renovation on June 17 and 18.
Nine of the suspects were arrested for breaching their conditions of stay by being involved in parallel trading in Lok Ma Chau.
The department reminded employers not to hire illegal workers and warned visitors not to take up employment in Hong Kong without permission from the Director of Immigration.