PORTLAND, Ore., Oct. 4 (Our Oregon Times) — A 15-year-old Benson Polytechnic High School student faces attempted-murder and domestic-terrorism charges after allegedly mixing chemicals at the Portland, Oregon, school. Multnomah County District Attorney Nathan Vasquez said the case was filed in juvenile court and that he is seeking to move it to adult court.
Portland police announced 19 charges on Oct. 2, 2026, following an investigation into the Sept. 8 incident. Police are withholding the student’s identity because of his age. The charges are accusations, not findings of guilt, and his lawyers denied the allegations at his Oct. 2 court appearance, The New York Times reported.
The case involves several separate questions: what happened at the school, which gases were produced and how the prosecution will proceed.
What do investigators say happened?
The Portland Police Bureau says the student brought chemicals from home, mixed them at school and suffered a medical emergency after inhaling gases from the mixture. KPTV/Gray News reported that the mixing occurred in the school cafeteria.
Police initially said the student had swallowed the mixture. They later corrected that account, saying he inhaled gases and did not drink it.
At the Oct. 2 hearing, Multnomah County Deputy District Attorney Eric Zimmerman alleged that the student arrived wearing gloves and goggles, attempted to combine chemicals and passed out as a cloud formed, OPB reported. Zimmerman said the student was attempting to make hydrogen sulfide.
The investigation led to the teenager’s arrest, according to police. Investigators believe he acted alone and say there is no ongoing threat to the school community or the public.
What is known about the chemicals?
The courtroom allegations and the laboratory testing describe different stages of the investigation.
At an Oct. 2 briefing, Sgt. Jim DeFrain, supervisor of the Metropolitan Explosive Disposal Unit, said initial testing indicated hydrogen sulfide, Fox News reported. Samples had been sent to an FBI laboratory, and results were pending at the time of the briefing.
KOIN reported that prosecutors identified both hydrogen sulfide and hydrogen cyanide during the hearing. Those identifications were prosecution allegations; DeFrain’s account of the testing was preliminary.
An unnamed Metro Explosive Disposal Unit sergeant described investigators as having a “pretty good theory” about the chemicals, KGW reported. Portland Fire & Rescue Chief Lauren Johnson described a “pungent smell,” according to KOIN.
How were students and staff affected?
The incident prompted an evacuation to nearby athletic fields, People reported. KATU also reported that students gathered there. Classes were canceled for one day, according to KGW.
“Over 100 students and staff were triaged that day and assessed,” Portland Police Bureau Public Information Manager Mike Benner said, People reported. Triage is the process of assessing people to determine their medical needs. Benner said at least seven required medical care after the incident.
What are the 19 charges?
The Portland Police Bureau lists 10 counts of attempted aggravated murder. It also lists one count each of:
- Attempted murder in the first degree.
- Attempted murder in the second degree.
- Domestic terrorism in the first degree.
- Domestic terrorism in the second degree.
- Unlawful manufacturing of a destructive device.
- Unlawful possession of a destructive device.
- Possession of a weapon in a public building.
- Unlawful use of a weapon.
- Recklessly endangering another person.
The total reflects separate counts, including multiple attempted-aggravated-murder accusations, rather than 19 different types of offense. The police charge list identifies the second-degree terrorism count as domestic terrorism, not attempted terrorism, as KATU described it.
Where does the court process stand?
Vasquez’s request concerns whether the prosecution should proceed in adult court rather than remain in juvenile court, where it was filed. The Economic Times reported his account of the filing and proposed transfer.
KPTV reported that the student was released to his father for treatment and that prosecutors sought a rehearing.
