<div><span style="font-size: 1rem;">At least three people including an adolescent girl were killed and 11 others wounded Friday when a 16-year-old shooter opened fire on two schools in southeastern Brazil, officials said.</span><br></div><div><br></div><div>Authorities in the city of Aracruz, in Espirito Santo state, said the shooter had opened fire on a group of teachers at his former school Friday morning, killing two people and leaving nine others wounded.</div><div><br></div><div>He then left that school -- a public primary and secondary school -- and went to a nearby private school, where he killed an adolescent girl and wounded two other people, officials said.</div><div><br></div><div>Authorities have arrested the shooter, said Governor Renato Casagrande, who declared three days of mourning in the state.</div><div><br></div><div>"He was a student at (the first) school until June, a 16-year-old minor. His family then transferred him to another school. We have information he was undergoing psychiatric treatment," Casagrande told a news conference. - AFP&nbsp;</div><div><br></div><div>bnbd24/fas</div>