AN alleged robber claimed he was not in Hongkong when an armed raid took place at a Central jewellery shop, the High Court heard yesterday. But Senior Crown Counsel Mr Richard Donald said that although immigration records showed that Tsang Tin-hei, 26, was out of Hongkong on March 12, 1992, he had sneaked back into the territory. Tsang, after leaving Hongkong on March 8, sneaked back in with the robbers on a speedboat, took part in the raid on the Chow Tai Fook jewellers in Queen's Road Central, then left again on the boat. The evidence against Tsang comes from a statement he made to police after he was arrested on May 28, 1992. Mr Donald said two men, Ng Yuk-ming and Chau Sai-ming, have already pleaded guilty to the robbery and are awaiting sentence. Ng will testify against Tsang. Tsang has denied robbing the shop of more than $12 million in watches and jewellery, possessing a gun and two counts of shooting with intent. At the time of the robbery 38 staff were working and two armed security guards were on duty. About 15 customers were in the shop when five robbers subdued the security guards. Counsel said the robbers produced pistol-like objects and ransacked the showcases. One robber fired inside the shop. Police arrived as the gang fled. The robbers fired three shots but police were unable to return fire because of the crowded streets. Police chased the robbers towards Pedder Street. The gang took a guard hostage, but released him, hijacked a taxi and got away, the jury heard. That evening, Ng and Chau were stopped by police in Chai Wan and property from the robbery was found on them. Ng gave a detailed statement to police, naming the others involved in the robbery with him, including Tsang, Mr Donald said. The hearing before Mr Justice Chan continues.