Bystanders Pick Up Smoke Canister, A Crime Scene Evidence, Outside Parliament

Parliament security breach: The yellow smoke canister, which was being passed around, should have been bagged and sent to the forensics team, sources have said.

Four people have been detained for breach of parliament security after two of them released colour smoke inside the Lok Sabha, and the remaining two popped open a colour aerosol canister on a road outside the parliament building.

It is not known whether the canister used inside the Lok Sabha has been picked up and safely stored for analysis; however, a yellow canister that was used by the two protesters outside had been passed around by bystanders, including some reporters, raising serious questions over securing evidence.

It is a standard practice for law enforcement agencies to secure evidence immediately before it gets contaminated. The yellow canister, which was being passed around, should have been bagged and sent to the forensics team, sources have said.