An explosion inside a mosque at a school complex in Jakarta injured at least 54 people during Friday prayers, sparking panic and a large police investigation. Authorities confirmed that the main suspect is a 17-year-old student at the same school who was seriously injured in the blast and is now under police guard at a hospital.
The incident occurred around midday at the mosque inside a high school in Kelapa Gading, North Jakarta. Witnesses reported hearing two loud blasts followed by thick white smoke filling the prayer hall. Many students ran out in panic, some with burns, cuts, and breathing difficulties caused by the explosion.
Dozens Injured as Chaos Erupts During Prayers
Emergency teams rushed dozens of injured students and staff to nearby hospitals within minutes. Doctors confirmed that most victims suffered minor burns and glass wounds, while three students remain in critical condition. Parents and relatives crowded local hospitals, anxiously waiting for updates.

A school worker described the moment as “terrifying,” saying everyone thought the building was collapsing. The mosque’s windows shattered, and several parts of the ceiling fell during the blasts.
Police said the explosion appeared to come from near the back of the mosque where the suspect was seated. Officers found toy weapons, wires, and chemical residue believed to be linked to the blast. A bomb-disposal unit secured the area and collected evidence for laboratory testing.
Police Probe Motive Behind Student’s Actions
The Jakarta police chief confirmed that the 17-year-old suspect was undergoing surgery for severe burns and hand injuries. Authorities are investigating whether he built a homemade explosive device and what motivated him to do so. Early findings suggest the blast may have been intentional, but police have not ruled out accidental ignition.

Investigators are also reviewing the suspect’s social-media activity and notes found in his school bag. Officers said they discovered written material suggesting feelings of isolation and anger, though no direct link to any extremist group has been established.
Officials have urged the public not to spread rumors as the investigation continues. “We are working carefully to confirm the cause and motive. There is no evidence so far of a larger network,” a police spokesperson said.
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Local authorities have ordered increased security at schools and religious facilities across Jakarta to prevent further incidents. Teachers and counselors have been assigned to provide psychological support to students affected by the explosion.
As of Saturday morning, 20 of the injured remain hospitalized, while the rest have been released after treatment. Police expect to release a preliminary report next week once forensic testing is complete.
