India New Delhi police said that the Parliament security breach was well-coordinated and meticulously planned over months by six people, five of whom are now in police custody.
As per the NDTV, during questioning, the accused told police that the breach was aimed at drawing the government's attention to various issues.
Indian media said that the five accused have told police that they were upset with issues like unemployment, farmers' troubles and Manipur violence.
Read More: Smoke attack disrupts Indian parliament, four arrested
They said they used the colour smoke to draw attention so that lawmakers have discussions on these issues.
"They had the same ideology and hence decided to give a message to the government. The security agencies are trying to ascertain if they were instructed by anyone or any organisation," an official said.
The Delhi Police investigation reveals that the accused held their first meeting in Mysuru 18 months ago, discussing issues like unemployment and inflation. A detailed plan took shape nine months ago near Chandigarh airport during the farmers' protest. In July, one of the accused conducted a reconnaissance of the new Parliament building.
On the anniversary of the Parliament attack, the group gathered at India Gate, where canisters were distributed. Although the initial plan involved six individuals entering Parliament, only two had passes. Two of the accused entered the Parliament complex and were arrested, along with two others. The detainees face charges under the anti-terror law and other sections of the Indian Penal Code. Investigations are ongoing.