At least one policeman sustained injuries after a low intensity blast was reported at the Maqsudan Police Station in Jalandhar late on Friday evening.
Police sources said that the reason behind the blast was not yet clear. Jalandhar's Commissioner of Police Jalandhar Praveen Sinha and Punjab DGP Suresh Arora, who was in the city have reached the spot to take stock of the situation.
The injured policeman was rushed to the nearest hospital for treatment.