As an NSG team reached Amritsar on May 9, DGP Gaurav Yadav said the Punjab Police is taking the help of all agencies to probe the two blasts that took place in the city within 30 hours.
A National Investigation Agency team visited and inspected the site of the second blast on Monday.
The first blast happened on the night of May 6 on Heritage Street, near the Golden Temple. One person was injured and the glass facades of some buildings in the area were damaged in the blast.