MOSCOW: At least 11 people perished in Russia after a fire in a Moscow factory caused the roof to collapse, authorities said on Sunday. Investigators said the blaze engulfed an area covering 3,000 square meters in the factory situated in the city’s east. “The bodies of 11 people were recovered when the fire was put out,” the local branch of the Investigative Committee said in a statement. The cause of the blaze remains unknown. A criminal investigation was launched to determine whether it might have been caused by negligence or arson. The victims are believed to be migrant workers, Russian news agencies reported.