KALYAN: Even as the death toll in the blast at a plant in Ulhasnagar rose to four with two missing persons - Ananta Jadhav alias Dingore (50) and Pavan Yadav (22) - being declared dead on Sunday, a criminal offence was registered against company officials and the tanker owner, stating that the vehicle was used despite being found "unfit".The explosion took place at the premises of Century Rayon on...