FIVE police officers who confronted a gang of armed robbers at an electrical shop were themselves robbed of service revolvers and ammunition, the High Court heard yesterday. Crown Counsel Alan Lucas told Deputy Judge Wong and a jury that the manager of the Heng Fa electrical shop in Po Yick Street, Tai Po, had managed to press the silent alarm when a gang of five armed men raided the shop in the morning of January 17, 1991. As the robbers tied up the manager, staff and customers, seizing almost $200,000 cash and valuables, four male officers and a woman constable arrived. A sergeant was threatened with a gun and the robbers took their four police revolvers and ammunition before fleeing, the court heard. Mr Lucas was opening the prosecution's case against Li Leung, 28, who has denied one count of robbery. Li denies taking part in the raid. The Crown will call evidence from one of the robbers who has admitted carrying the gun during the robbery and has been sentenced.