Jha, accompanied by a man, reached the Kartavya Path police station in the national capital where he was handed over to the special cell. 

"Lalit Jha came to Kartavya Path police station where he was arrested. He was handed over to special cell which is investigating the incident," an officer said. 

In a major security breach on the anniversary of the 2001 Parliament terror attack on Wednesday, two men -- Sagar Sharma and Manoranjan D -- jumped into the Lok Sabha chamber from the public gallery during Zero Hour, released yellow smoke from canisters and shouted slogans before being overpowered by MPs. 

Around the same time, two others, including a woman, raised slogans and released yellow smoke from canisters outside the Parliament premises, prompting police to round up the duo. 

According to police, the Parliament security breach was well-coordinated, meticulously planned and carried out by six people, all of whom are now in police custody. -- PTI