The efforts of a team of Sha Tin police, who had braved recent cold weather and lain in wait for burglars in an exclusive area of Sha Tin for about a month, paid off yesterday with the arrest of an intruder. A mainlander, 27, was caught trying to climb through a window into the living room of a two-storey house in Kam On Garden on Ma On Path, Kau To Shan, after removing a ventilation fan at about 9.55am. 'It's possible that the burglar struck as he knew security measures like the infrared X-ray system had been turned off in the morning,' a police source said. The man fled empty-handed when a Filipino domestic helper saw him and shouted at him. Her employer, a local businesswoman, and another helper were also at home. One of the helpers called police. A team of plain-clothes and uniformed police who hid in undergrowth or unoccupied houses as part of an anti-burglary operation rushed out and sealed off the main roads. Police Tactical Unit and Emergency Unit officers were called in to mount a search with the help of two tracking dogs. The mainlander was found hiding in a hole covered with a metal sheet in the backyard of a hillside house. A search for accomplices ended at about 6pm with no other arrests made. Officers also found a rucksack containing some clothes not far from the house. 'The suspect tried to run down a slope to Tai Po Road,' a police source said. 'After discovering our officers had cordoned off the road, he dumped the rucksack at a hillside, ran up the hill and returned to the house to hide.' The suspect told police he had arrived on Saturday from Hubei province for a seven-day visit.