Prime Minister Narendra Modi on Thursday held a meeting with his ministers to discuss the breach of security in Parliament, India Today reported.
The news channel reported that Modi asked the ministers not to politicise the matter as it is very serious.
2 men had opened smoke-emitting canisters in the Lok Sabha on Wednesday leading to chaos.
At the same time, 2 people were detained from outside the Parliament for releasing smoke from similar cans.
The 4 accused have been indetified as Sagar Sharma, D Manoranjan, Amol Shinde and Neelam.
A 5th suspect was caught later on Wedneday. Another man is believed to be involved in the breach and the police are on the lookout for him.