POLICE were last night searching for a group of illegal immigrants who beached their speedboat at a remote spot near the Tap Shek Kok power station and ran up the hills after being challenged by a police launch. Officers reported seeing 13 men jumping off the speedboat and running up the hills near the power station. Four officers from the Small Boat Unit also made a landing to chase the group until reinforcements arrived. Emergency Unit officers set up roadblocks along nearby roads while Police Tactical Unit officers were despatched to hunt for the group. Reports said police were also using a helicopter equipped with a searchlight to assist officers on the ground. The incident began at about 8 pm when a patrolling launch spotted a high-powered speedboat cruising off the Tap Shek Kok coastline. The officers ordered the speedboat to stop but warnings were ignored. A flare was fired to aid the chase as the speedboat tried to make an escape. The boat continued to cruise close to the shoreline until it suddenly swerved at high-speed and landed at a remote beach. Police believed some of the occupants may have been injured in the beaching, but officers saw the men jump from the speedboat and run towards the hills. The six-metre speedboat, equipped with powerful outboard engines, was later pulled out of the sand and refloated. It was towed to a police launch.