Chandigarh, April 3 -- The counter intelligence (CI) wing of Punjab Police on Thursday detained two key suspects from Ropar district in connection with a blast outside the Punjab BJP headquarters in Chandigarh. Those detained have been identified as Aman Singh, alias Bholu, and Gurtej Singh, both residents of Rattangarh village in Morinda.

Officials familiar with the matter said the CI wing launched an operation immediately after getting information that the accused had crossed to Ropar district by using a route through Mullanpur. Both of the accused had hurled a grenade at the BJP headquarters in Sector 37 on Wednesday evening and used a motorcycle to flee, said officials.

Earlier in the day, the UT police said the attack was part of a...