Schools close, support teams mobilize after Rio Branco shooting
Schools close and mental health teams mobilize to support traumatized students and teachers.
Event / Security
Rio Branco School Shooting Brazil
A 13-year-old boy opened fire at Instituto São José school in Rio Branco, Acre state, killing two staff members and wounding another employee and a student. The shooter was arrested along with his stepfather who owned the firearm. Schools statewide closed for three days as authorities provided psychological support to the affected community.
2 reported locations
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2026-08-18 to 2026-11-15 · UTC publication dates
Coverage begins 6 May, 02:06 UTC
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What happened
13-year-old boy opens fire at school in Rio Branco, Brazil
A 13-year-old boy entered Instituto São José school in Rio Branco, capital of Acre state in the Amazon region, armed with a 9mm caliber firearm and opened fire in a corridor leading to the principal's office. He then surrendered and was arrested.
Psychological support teams deployed for students and teachers
Psychological support teams were mobilized to provide assistance to students and teachers affected by the shooting incident at Instituto São José school.
Stepfather arrested for providing firearm in school shooting
The stepfather of the teenage shooter was arrested. He was identified as the owner of the 9mm caliber firearm used in the attack.
Civil police open investigation into school shooting in Acre
The Civil Police of Acre state opened an official investigation into the shooting incident at Instituto São José school.
Students identified as potentially cooperating with school shooter
Police identified students who had knowledge of the shooter's intentions and who, according to Lieutenant-Colonel Felipe Russo of the State Military Police, may have hypothetically cooperated with him.
School shooting in Rio Branco kills two staff members
Two female school employees were killed in the shooting at Instituto São José school. A third employee and an 11-year-old student were also wounded, with the student struck in the leg.
Schools across Acre state suspend classes for three days
Following the shooting, classes were suspended for three days across all educational institutions in Acre state according to security protocols in effect.
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2 alternative perspectives
Stepfather arrested as investigation unfolds into Rio Branco shooting
Stepfather arrested after 13-year-old's school shooting kills two staff; investigation underway.