Police said the man responsible for the attack had been arrested, without providing further details, according to Reuters.
Hospital Santo Antonio in the city of Blumenau said the other four injured children in the attack aged zero to two-years-old are under medical care there.
President Luiz Inacio Lula da Silva called the attack a "monstrosity", dubbing it an "unacceptable, absurd act of hate and cowardice" against "innocent, defenseless children," in a Twitter post.
MP/PR