Navi Mumbai, Sept. 5 -- The Oil and Natural Gas Corporation (ONGC) still has not been able to ascertain the reason for the explosion at its Uran plant on Tuesday morning, which claimed four lives.

The company's resident production supervisor and three Central Industrial Security Force (CISF) jawans died in the massive fire.

Senior officials visited and inspected the plant on Wednesday. Sonali Dutta, public relations officer of ONGC, said, "Our process is on to ascertain the reason behind the unfortunate accident that took place on Tuesday. Our senior officers inspected the plant, but the details are not enough to share with the media. We are going step by step."

The ONGC started some repair work in the plant on Wednesday. Hemendra Sing...