Five people have been nabbed in connection with the Parliament security breach on December 13.
Two of them, Amol and Neelam, were caught while they protested outside the Parliament premises.
According to police, Amol told the investigators that they carried out the act as they were upset with issues like the farmers' protest, Manipur crisis and unemployment.
Neelam, before being taken away by police, told reporters, "The Indian government is subjecting us to oppression. When we raise our voices for our rights, we are beaten and thrown in jail. We are subjected to undue force. We do not belong to any organisation. We are students and we are unemployed."
"Our parents work as labourers, and farmers and some are small shopkeepers. An attempt is being made to suppress our voices. Dictatorship will not work," she said.