Punjab's most-wanted criminal Harjinder Singh Bhullar alias Vicky Gounder and his aide Prema Lahoriya were shot dead in an encounter with the police in a village near Muktsar at Punjab-Rajasthan border, on Friday evening. 'Vicky Gounder and Prema Lahoriya were killed during an encounter with police. This was an intelligence-based operation', Dinkar Gupta, DGP Intelligence, Punjab told ANI.