PTI, Beijing : Chinese police have arrested over 800 people suspected of producing, selling and using illegal wiretapping and photography equipment to conduct surveillance. Through joint efforts by police from 14 provincial regions, 13 production facilities have been destroyed and 67 groups associated with illegal wiretapping equipment have been uncovered in the action, the ministry of public security said. The police have uncovered over 1,550 criminal cases involving the use of wiretapping equipment in blackmail, kidnapping, illegal detention and other crimes. Over 15,000 sets of equipment for covert tracking, positioning, photographing and recording have been confiscated, state-run Xinhua news agency reported yesterday. A security official said this equipment seriously undermined social stability and the people’s legitimate rights, adding that the police will further crack down on such illegal activity.