Puslabfor Bareskrim Polri Calls Explosives Residue At SMAN 72 Jakarta With Low Power

Head of Ballistics and Forensic Materials (Kabid Balmetfor) Puslabfor Bareskrim Polri, AKBP Ari Kurniawan, at Polda Metro Jaya, Tuesday 11 November 2025/ Photo: Ari Kurnitsyah

JAKARTA - Head of Ballistics and Forensic Materials (Kabid Balmetfor) Puslabfor Bareskrim Polri, AKBP Ari Kurniawan, revealed the results of his team's examination regarding the crime scene (TKP) in the explosion incident at SMAN 72, Kelapa Gading, North Jakarta.

Ari explained that the Puslabfor team conducted a crime scene investigation after the location was declared sterile.

"In this case of the explosion, after the TKP area was declared safe, our team from the Forensic Laboratory conducted crime scenes in several locations," Ari told the media at Polda Metro Jaya, Tuesday, November 11, 2025.

He explained that the inspection was carried out in three different locations, namely TKP 1 in the school mosque area, TKP 2 in addition to the trash can, as well as the house of the alleged perpetrator who is still a child in conflict with the law (ABH).

"From the results of the crime scene that we carried out, both at TKP 1, TKP 2, and at ABH's house, it was found that there were residual explosives with low strength or low explosive," explained Ari.

Furthermore, the results of the analysis of the material from the bomb that has not exploded also show the same characteristics, namely in the category of low explosive power.

"Between the material found at the site of the explosion and at ABH's house, it shows regularity," he added.

Ari emphasized that all the findings would be summarized and submitted to investigators for further investigation.

"We will conclude this result and we leave it to investigators to become an in-depth material," he said.

The explosion occurred during a Friday prayer sermon in two locations within SMAN 72, Kelapa Gading, North Jakarta, on November 7, 2025. As a result, dozens of people were injured, some of whom suffered burns.

The perpetrator was arrested injured. Until now, the perpetrator is still undergoing treatment at the hospital.

Investigators will summarize all findings of TKP processing and laboratory examination results to be used as a basis for further investigation and determination of the legal status of the alleged perpetrator.