Hong Kong police are hunting for a foreign domestic worker after a report about alleged child abuse was received on Thursday.

Police received a report at noon that a domestic worker allegedly hit a five-year-old boy under her care at a luxury apartment in South Bay Palace in Repulse Bay, Oriental Daily reported.

Police arrived at the apartment to look into the matter but were told the domestic worker had finished her employment contract and left the city.

The boy, who had no obvious injury, was sent to Ruttonjee Hospital for a medical examination.

Police classed the case as child abuse and say they are looking for the domestic worker.

The Law Reform Commission of Hong Kong started a three-month consultation in mid-May on causing or allowing the death or serious harm of a child or vulnerable adult.

The Commission has recommended changing the law so adults can be jailed for up to 20 years for failing to protect children or vulnerable adults from death or serious harm.

It also suggested raising the maximum jail term to 10 years for offenses involving ill-treatment or neglect of a child.