In southern Brazil, at least four children have been stabbed to death, and several others wounded after a man broke into a kindergarten. The tragedy occurred in the town of Blumenau in Santa Catarina state on Wednesday. Local police say the fatalities include three boys and a girl aged four to seven. A 25-year-old man jumped over a wall to get in and afterwards drove away on a motorcycle to turn himself in. The motive is not yet clear.