[OneIndia] Following the incident, all inter-state borders have been sealed. Security has also been heightened at dams, railway stations, bus stands and other vital installations.A probe has been ordered after Khalistan flags appeared at the main entrance to the Himachal Pradesh assembly complex on Sunday.
The district administration has set up a probe by the SIT to look into the intrusion and preliminary reports indicate that the incident could have taken place last in the night or early morning.