DES PLAINES, Ill. (AP) — Five people have been killed in a house fire in the Chicago suburb of Des Plaines. The dead include four children under the age of 6. Des Plaines Fire Chief Daniel Anderson says all five were members of the same family. The names of the victims haven’t been released. The fire happened shortly before 11 a.m. Wednesday at a duplex. No cause had been determined by early afternoon. Anderson says a firefighter was injured while battling the blaze. The firefighter’s condition isn’t known.