Following a serious security breach at the Parliament on Wednesday, the Congress took a jibe at the government while demanding answers. Two persons jumped into the Lok Sabha chamber from the public gallery during Zero Hour and released yellow gas from canisters and shouted slogans before being overpowered by MPs. Around the same time, two persons, including a woman, also sprayed coloured gas from canisters while shouting slogans 'tanashahi nahi chalegi' outside the Parliament premises.