Two people have died and one injured at an explosion and subsequent fire at vegetable oil producer Saipol’s plant in northern France on 17 February.

Saipol, the oilseed branch of biodiesel firm Avril, said the incident happened at its plant in Dieppe and that in addition to those dead and injured, seven others had been treated for shock, Reuters reported.

“The management of the factory and the teams present on site are deeply shocked and saddened by this terrible accident. Their thoughts are with the victims and their families in this difficult moment,” the company said in a statement.

The cause of the explosion, which took place at an extraction station, was unclear and being investigated at the time of writing and Saipol said it was too early to comment on when the facility would resume operations.

The Dieppe factory produced rapeseed oil for further processing into products such as biodiesel and animal feed, said Saipol.

In June 2017, Saipol halted production at one of its largest production units in northern France due to a fire in the electrical supply system, according to Reuters.

Avril is the largest biodiesel producer in Europe and the largest table oil producer in France, with brands including Lesieur and Pouget.