Details Emerge on School Shooter in Fatal Nonthaburi Mass School Shooting, Motive Under Investigation
Nonthaburi-
A 14-year-old student opened fire at Debsirin Nonthaburi School in Bang Kruai district, Nonthaburi province (on the outskirts of Bangkok), on the morning of August 7th, 2026, killing multiple people before dying of a self-inflicted gunshot wound. Authorities have also linked him to the earlier killing of his grandparents at their home.
The incident is one of Thailand’s deadliest school shootings in recent years and the second such attack in the country in 2026 (following a February incident in Hat Yai in which a teacher was killed and a student injured). The school, a secondary institution with roughly 3,000–3,100 students and about 147 teachers, is located on a busy highway northwest of the capital.
Police identified the suspect as a teenage male student at the school, described as 14 years old. He lived with his grandparents (his parents having separated when he was young). He was described by some as an avid gamer and by a teacher as a “good kid with good study records” who was not known to be aggressive but was quiet. No clear motive has been publicly confirmed; investigators are examining possible factors including access to the weapon.
He used a 9mm handgun that belonged to his grandfather. Police recovered evidence of at least 26 rounds fired, plus additional unused ammunition (reports mention around 34 rounds). He was seen wearing a purple physical-education uniform. He is reported to have killed his grandparents at their home in the Bang Bua Thong area before going to the school, then turned the gun on himself inside the school and later died.
Gunfire was reported inside the school between roughly 9:30–10:00 a.m. local time. Initial emergency calls and responses followed shortly afterward, with police, special operations units, and rescue teams sealing off the area, evacuating students and staff, and searching the buildings. Students fled the campus as ambulances arrived; some sheltered under desks amid the gunfire. The situation was brought under control within a relatively short period after the shooter was found dead. Investigators later examined the shooter’s home and confirmed the grandparents’ deaths.
Witnesses described initial confusion, some mistook the shots for firecrackers or other noises, followed by repeated gunfire as the shooter moved through areas of the school. Emergency responders treated injured people on site, including for wounds to the back, chest, and arms, and performed CPR on at least one teacher.
Casualty figures evolved during the day and showed some variation across official statements, which is common in developing incidents. Commonly reported numbers include:
– At the school: multiple teachers killed. Named victims in some Thai reports include school administrators and teachers such as a deputy director and subject teachers.
– The shooter himself.
– His two grandparents at home.
Injured numbers have been reported as around 15 (with two critical in some early police statements) to 21–22 (with up to nine serious in health ministry figures). Many of the injured were students; some injuries occurred while fleeing rather than from direct gunfire. The youngest injured or affected students mentioned in reports were as young as 12. Victims were distributed to several nearby hospitals.
Thai authorities, including police spokespeople, provincial commanders, the public health minister, education officials, and the deputy interior minister, have provided updates. Prime Minister Anutin Charnvirakul offered condolences and directed assistance for victims and families. The Education Ministry and other agencies are coordinating support. Investigations continue into the motive, how the underage student obtained the family firearm, and exact sequences of events. Thailand has relatively strict gun laws but has seen prior mass shootings and enforcement can differ from law.
This remains a developing story; official tallies and details may be refined further as investigations proceed. Emergency and counseling resources have been mobilized for the school community.
