evidence: UP's Bulandshahr city was razed to the ground, police investigation has revealed that residential building was given on rent to a firecracker trader named Raj Kumar who was illegally manufacturing crackers and is now on the run. [...] SSP Shlok Kumar said, "An FIR has been filed against Kumar and his two brothers -- Vinod, who died in the blast and Pramod who has been taken into police custody -- under relevant sections of Explosives Act, IPC sections 304 (culpable homicide), 285 (negligent conduct with respect to fire or combustible matter), 265 (fraudulent use of false weight or matter) and 269 (release of obnoxious matter into environment)." He added, "A unit of bomb disposal squad had arrived from Ghaziabad that destroyed the inflammable chemical brought in from a Tamil Nadu based unit that manufactures raw material used for firecrackers."