A restaurant owner was stabbed and robbed of more than HK$800,000 in Sai Kung as he was walking to a bank yesterday. Ng Kam-fook, a director of Chuen Kee Seafood, was carrying a bag containing HK$500,000 in cash, and cheques with a total value of HK$320,000 when he was attacked by two men in Man Nin Street at 10am. Mr Ng sustained wounds to his arms, legs and head, and was unconscious when admitted to Tseung Kwan O Hospital. He was in a serious condition last night. The victim's brother, Ng Wai-lun, told ATV that the robbers seemed to know how and when the money would be taken to the bank. '[The robbers] seemed to know our way of life quite well, such as where we go in the morning and where we go in the afternoon,' he said. 'We have not received any blackmail or other threats recently. The robbery happened all of a sudden. We have to work closely with the police to find out who carried out the crime.' One of the robbers escaped in a car that was later found at Pak Kong Road. His accomplice fled on foot. Police said the car, which had a false number plate, had been reported missing in August. Officers collected fingerprint samples and other evidence from the vehicle. They also conducted a thorough search of the area around the crime scene, checking rubbish bins, flower beds and back alleys. The robbers, described as in their 30s, wore blue jeans. One wore a white T-shirt, while the other had a grey T-shirt and a red jacket. The case is being investigated by Wong Tai Sin District Crime Squad.