Three people were killed after a fuel storage tank exploded in the northern Mongolian province of Darkhan-Uul, reported the provincial governor, B.Azjargal. One person died while being transferred to nearby hospital and corpses of two others were found after three days.

The storage tank of AI-92 gasoline with a capacity of 2,000 tons exploded in the Darkhan city of the province on Thursday morning.

Firefighters worked to extinguish the fire caused by the explosion, and additional forces have been called from the country’s capital Ulaanbaatar and the neighboring Erdenet city.

The cause of the explosion is under investigation.