The key conspirator is Lakhbir Singh Landa. He's a resident of Tarn Taran. He is a gangster & shifted to Canada in 2017. He is a close associate of Harinder Singh Rinda, who is in close proximity to Wadhawa Singh & part ISI & he operates from Pakistan: Punjab DGP on Mohali blast pic.twitter.com/UoggjpNQWV