Amritpal Singh, self-styled radical Sikh preacher and Khalistani sympathiser, is allegedly on the run and the Punjab police is trying to arrest him. At least 78 of Singh’s aides have been arrested and some have been detained for questioning, the police said. The Central agencies have been keeping a close watch on his activities and a detailed dossier prepared on him reveals that he is getting strong financial support from the Khalistani elements settled abroad.