Hong Kong police are searching for a 76-year-old man who went missing in Ma On Shan on Wednesday.Liu Yim-kwan left his home at Yan On Estate on Hang Chi Street in the early hours of Wednesday and failed to return, police said on Thursday.Liu is about 1.7 metres (5 feet, 9 inches) tall with a lean build and short black hair.He was last seen wearing a black jacket, black trousers and white trainers.His family reported him missing on Wednesday.The force appealed to anyone with information on Liu’s whereabouts to contact the New Territories South’s regional missing persons unit on 3661 1176, or visit any police station.