Thai police probe Debsirin Nonthaburi School shooting as 14-year-old suspect's violent games and US school-shooting searches surface; motive unestablished

Thai police probe Debsirin Nonthaburi School shooting as 14-year-old suspect's violent games and US school-shooting searches surface; motive unestablished

Thai police are investigating a shooting at Debsirin Nonthaburi School involving a 14-year-old suspect, who had searched for US school shootings and played violent video games. The boy allegedly killed his grandparents before the incident, but a motive remains unestablished, authorities report.

The Star The Star8 August 2026 · 09:58 UTC
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Thai police are delving into the tragic shooting at Debsirin Nonthaburi School, where a 14-year-old suspect is at the center of the investigation.1

The boy reportedly killed his grandparents at their home in Bang Khu Rat subdistrict before heading to the school on August 7.

Preliminary checks revealed that he had engaged with violent video games and had searched for information about school shootings in the US. These searches began around July 30, raising concerns about potential influences on his actions.23

However, police have not confirmed whether these games or his search history directly motivated the shootings. The firearm used in the incident was legally registered to the teenager’s grandfather.

Family members described the boy as quiet and polite, with his grandmother stating, “I had never thought such an incident would happen.” She emphasized that the family was close-knit, and she did not believe family problems contributed to the tragedy.78

As the investigation continues, authorities are focused on establishing a clear motive behind this shocking event, which has left the community in disbelief.

Key Insight
“The suspect's grandmother Thananyaporn, 60, said he lived with his grandparents, rarely went out, and stayed home playing computer games, describing him as quiet and polite. Police have not established that the games or search history caused the shootings.”
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1
The StarThe Star
“BANGKOK: Thai police investigating the shooting at Debsirin Nonthaburi School are examining the online activity of the 14-year-old suspect after finding that he had searched for information about a school shooting in the US, as investigators seek to establish a motive.”
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