PARIS --?At least one person was killed and another was missing in a factory fire in northwestern France on Saturday morning, local media reported.

The fire was caused by a blast occurred at around 11:00 am local time in the factory of Saipol, a French agro-industrial group, located in the port area of Dieppe, a commune in Normandy, said the daily Le Parisien.

The fire has been under control, and might have been caused by the explosion of a tank, according to BFMTV citing a local official.

According to media reports, a security perimeter has been set up with the firefighters on site. All residents of the area were asked not to leave their homes.