Who are Goldy Brar and Lawrence Bishnoi, suspects in Sidhu Moosewala's killing?

Punjab's DGP VK Bhawra said Lawrence Bishnoi gang and Canada-based gangster Goldy Brar are involved in Sidhu Moosewala's killing. Brar, whose real name is Satinder Singh, is part of Bishnoi's gang and is wanted in many criminal cases by Indian authorities. Bishnoi is lodged in a Rajasthan jail and his gang has criminal records in Delhi, Rajasthan, Punjab and Haryana.