Radical Sikh preacher Amritpal Singh, who has been evading arrest for more than 10 days, has returned to Punjab and plans to surrender, police sources have claimed. Amritpal Singh, who supports a call for a separate homeland for Sikhs and is wanted for an armed raid on a police station last month, was said to be travelling to Amritsar through the villages of Hoshiarpur when the Punjab Police was tipped off about his presence in the area, sources said. On Tuesday night, the police launched a massive door-to-door search operation in Hoshiarpur and neighbouring villages to catch him.