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Riau teacher named suspect in death of student testing 3D-printed rifle

Police named the female suspect for negligence but did not detain her because she was cooperative throughout the investigation.

Rizal Harahap (The Jakarta Post)
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Sat, April 18, 2026 Published on Apr. 17, 2026 Published on 2026-04-17T17:38:54+07:00

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Detectives from the Siak Police Crime Investigation Unit (Satreskrim) collect evidence following the death of a student on April 8 after his 3D-printed rifle exploded at Sains Tahfiz Islamic Center Junior High School in Siak regency, Riau. Before he performed the demonstration, the victim asked his teammates to disperse and move away before he demonstrated the rifle. Detectives from the Siak Police Crime Investigation Unit (Satreskrim) collect evidence following the death of a student on April 8 after his 3D-printed rifle exploded at Sains Tahfiz Islamic Center Junior High School in Siak regency, Riau. Before he performed the demonstration, the victim asked his teammates to disperse and move away before he demonstrated the rifle. (kompas.com/Siak Police)

P

olice in Siak regency, Riau, have named a female teacher at Sains Tahfiz Islamic Center junior high school as a suspect of negligence in the case of a student’s death while testing a 3D-printed rifle for a science project.

Siak Police chief Adj. Sr. Comr. Sepuh Ade Irsyam Siregar said detectives found indications that the teacher, identified as IP, was negligent in the case and she could be charged with Article 474 Clause 3 of the 2023 Criminal Code regulating negligence causing the loss of someone’s life.

He said the article comes with a punishment of five years behind bars or a Category V fine, or Rp 500 million (US$29,098).

“The suspect is a teacher who was responsible accompanying the examination but did not prevent the demonstration of a rifle by her student,” he said on Wednesday.

The tragic incident took place on April 8 at about 10:30 a.m. during a practical examination dubbed as Science Show held at the school’s field in Kampung Rempak subdistrict, Siak district, Siak regency.

There were five groups, each consisting of nine students, which would take turn showcasing their scientific projects. When it was the victim’s group’s turn to demonstrate their project, victim MAA took the role to demonstrate the rifle, dubbed Musketeer Gun.  

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The victim and his group were working on a 3D-printed rifle. He made the rifle on his own using laptop and 3D printer using materials such as plastic, iron and chemical substances he acquired from online marketplace using Rp 200,000 in funds from his group.

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