Two employees sustained injuries in a fire that broke out at the state-run oil and gas giant ONGC's plant at Uran in neighbouring Navi Mumbai on Thursday evening, police said.

The fire started around 5.35 pm in a sump where raw oil was stored but it was brought under control within an hour, said an official, adding that the exact cause of the fire was yet to be ascertained. At least seven fire brigade vehicles were pressed into action to douse the flames, he said.