New Delhi/IBNS: The four, who were arrested over the security breach in Parliament, have been charged under the anti-terror law and Unlawful Activities (Prevention) Act or UAPA, media reports said.

The four will be produced in the court on Thursday.

The Union Home Ministry has formed a panel to probe into the shocking Parliament security breach that happened on Wednesday when the proceedings of the Lok Sabha were on.

The incident coincided with the 22nd anniversary of the terrorist attack on Parliament.

Triggering panic and chaos in Lok Sabha on Wednesday, two men carrying smoke canisters jumped into the chamber of the Lower House from the visitors' gallery.

Both the intruders were immediately apprehended and taken into police custody.

Six people were involved in the planning and execution of a major security breach in Parliament on Wednesday, media reports said.

Two individuals named Sagar Sharma and D Manoranjan deployed yellow smoke canisters inside the Lok Sabha, and two others - Neelam Devi and Amol Shinde - burst red and yellow canisters outside the Parliament. The fifth has been named as Lalit Jha, at whose Gurgaon home the other five stayed.

The sixth is Vicky Sharma, also from Gurgaon, and he has also been arrested.

Sagar Sharma and Manoranjan, who were seated in the Lok Sabha's visitors' gallery before launching this shocking disruption, were given entrance passes requested by BJP MP Pratap Sinha's office.

The incident happened when Zero Hour of the House was in progress.

The individuals involved reportedly pulled out the canisters from their shoes.

They moved from desk to desk and it seemed they were trying to head towards the Well of the House.

Members present inside the House told reporters as quoted by The Indian Express later that they (the protesters) were chanting slogans such as ‘tana shahi nahi chalegi‘ (dictatorship won’t be accepted).

Meanwhile, Neelam and 25-year-old Amol Shinde, were detained by local police outside New Delhi’s Transport Bhavan, where they were protesting with yellow smoke.

The proceedings in the lower house were adjourned soon after the incident till 2 PM.

It may be mentioned that the incident happened on the 22nd anniversary of the terror attack in Parliament in 2001.

Forensic teams collected samples of evidence for further probe into the security breach incident on Wednesday.

Interrogation of the four persons was underway to ascertain their motive behind the protest and why they chose to hold it in and outside parliament.

According to sources, the Delhi Police Special Cell and Crime branch, and Central probe agencies are investigating the matter.

Replying to the queries of media persons, an NDRF official said "Our technical team is working on this issue and investigating the exact nature of the yellow smoke.

After the scare, security protocols were revamped, including allotting separate entrances to MPs, staff members, and the press. Visitors, when allowed back, will enter from a fourth gate. The issue of visitor passes has been suspended.

In addition, the visitors' gallery will now be encased in glass to stop people from jumping into the Lok Sabha chamber. Body scan machines, similar to those in airports, will be installed in Parliament.