Congress MP Karti Chidambaram was inside Lok Sabha when the security breach happened. "This is a very serious breach of security and raises questions on the efficacy and robustness of the security protocol in parliament," he said, adding, "The request for the pass was issued by a BJP MP. When people request us for passes, all MPs, including me, write a letter requesting the pass. The pass is not issued by the MPs but by the Lok Sabha Secretariat after verifying the identity of the person."