Duo arrested in connection with Tinsukia grenade blast have ties to ULFA: Assam Police Duo arrested in connection with Tinsukia grenade blast have ties to ULFA: Assam Police Assam Police has arrested two men in connection with the grenade blast that killed two in Digboi on May 14. Both suspects have active ties to the ULFA, said Special DGP GP Singh. advertisement UPDATED: May 19, 2021 00:55 IST The two men arrested by Assam Police in connection with the Tingrai Bazar grenade blast (Photo Credits: Hemanta Kumar Nath) Assam police have apprehended two persons for their alleged involvement in the Tingrai Bazar grenade blast in Assam's Tinsukia. The motorcycle, allegedly used to carry out the crime, was also recovered.