Toronto, May 4 -- The Canadian Police have arrested a group of men possibly linked to gangster Lawrence Bishnoi that they said was responsible for the killing of Khalistani separatist Hardeep Singh Nijjar, according to local media. The accused Kamalpreet Singh, Karanpreet Singh and Karan Brar face first-degree murder and conspiracy charges, according to documents filed in a Surrey court Friday, News outlet CBC News said. The charges have not been tested in court....