Radical Sikh preacher, Amritpal Singh, wanted for an armed raid on a police station last month and has been on the run from the police for 12 days. He supports a call for a separate homeland for Sikhs, and following a crackdown on his activities, the Punjab Police have been under immense pressure to arrest him and his associates. Last night, the police launched a massive door-to-door search operation in Hoshiarpur and neighbouring villages to catch Singh and his associates who are accused in several criminal cases. Singh had plans to give an interview to an international news agency before surrendering, but changed his mind after realising that he had no chance of escaping. His whereabouts remain unknown.