AlQa'dah 13, 1436, Aug 28, 2015, SPA -- Unknown assailants attacked a refugee home Friday in northern Germany with a petrol bomb, dpa cited police as reporting. "The incendiary device was thrown through a closed window into a flat in the former school building," police spokesman Jens Petersen said, adding that a carpet and mattress were set ablaze. A mother and her three children who were sleeping in the adjoining room were unharmed, Petersen said. The family was taken to alternative accommodation, where the mother is receiving counselling. The incident was reported to police at 2 am (0000 GMT). Firefighters were alerted by residents of the home and were able to extinguish the fire.