A massive fire erupted at an industrial zone in Doroud, southwest Iran on Wednesday leaving two people hospitalized.

An official from the Lorestan provincial authority said the fire occurred in the tanks of the Gohar petro-refinery with 16 fire trucks dispatched to the scene. The cause of the blaze remains unknown.

Farhad Ziviar, the governor of Lorestan said all available equipment in Lorestan province, as well as neighboring provinces such as Markazi were mobilized to control the fire. Speaking from the scene, he said there were concerns about the spread of the fire to the gasoline tanks located in the vicinity.

In recent years, there have been a number of explosions and fires near Iran's military, nuclear, and industrial facilities.

In March, there was a large fire at three warehouses belonging to a home appliances manufacturer and in January, a huge fire broke out at an Iranian military industry factory in Esfahan in what was believed to be a suspected drone strike. Iran blamed the strike on Israel though the claims were never confirmed.