At least four young children have been killed by a man wielding a hatchet in a kindergarten in the city of Blumenau in southern Brazil, local officials say.
Another four children were injured by the 25-year-old man who entered the creche at around 09:00 local time (12:00 GMT) on Wednesday.
At least one of them is reportedly in a serious condition.
Police told local media that the attacker had surrendered and was in police custody.
In a statement, military police said that the assailant had handed himself in at one of their stations in the town.