A gang, headed by jailed Lawrence Bishnoi, has established liaison with other gangs in Punjab, Haryana, Rajasthan, Chandigarh, Delhi, Maharashtra, Himachal Pradesh, Gujarat, Uttar Pradesh, Uttarakhand, Bihar, Jharkhand and Madhya Pradesh, said officials adding that the members of the gang are tasked by PKE to carry out targeted killing of religious leaders, politicians and businessman.