Firefighters and gendarmes stand in front of a house in Estree-Blanche, northern France, on early January 7, 2018, after a fire caused the death of four persons, among them two volunteer firefighters. Two young volunteer firefighters died while trying to extinguish a fire, which also killed two young people in the burning house and injured three others. According to the prefecture, the fire broke out in the early morning for a reason still unknown. / AFP PHOTO / PHILIPPE HUGUEN