Hong Kong police will seek help from their mainland counterparts to find the parents of a mentally disabled boy dumped in a Lau Fau Shan street on Wednesday.
Crime squad officers suspect the boy - thought to be aged between five and seven - was smuggled into the city from Shenzhen by boat and then abandoned.
The boy probably has polio because he has problems walking, police say. 'He [also] fails to communicate when our officers speak to him and is thought to be mentally retarded,' a police officer said.
'He is unable to tell us his name or where he came from.'
The officer said the boy did not appear to have any injuries but medical tests would be conducted to determine the state of his physical and mental health.
The force's child psychologist would also try to talk to the boy to find out more information, the officer said.