Chandigarh, April 1 An explosion outside the Punjab BJP headquarters here on Wednesday evening caused panic among people, with police saying a "crude" device appeared to have been thrown. No casualties were reported.
A team from the National Investigation Agency was at the site to investigate the blast, which occurred around 5 pm, a police officer said.
A scooter parked outside the building in Sector 37 was damaged in the blast.
"Prima facie, it appears that a small, crude-type device was thrown," Senior Superintendent of Police Kanwardeep Kaur told reporters.
"We received information at around 5 pm that an explosion-like sound was heard near the Punjab BJP office," she said.
"Our crime branch and the operation cell also reached here," she added, adding that a team from the Central Forensic Laboratory was also rushed to the site.
Vineet Joshi, head of the party's state media cell, who heard the blast, said, "How did it happen? We could see some signs on the boundary wall. Only the police can provide details."
He told reporters, "It is a matter of concern if a blast took place outside the party office."
The area also houses the Law Bhavan and a petrol pump.