Indonesian police investigate ties between a mosque attack suspect and hate groups

Indonesian authorities are investigating a 17-year-old suspect in connection with an explosion at a high school mosque that injured 54 people, including the suspect himself. Police discovered explosive powder and incriminating writings during a search of the teenager’s home following the Friday attack at SMAN 72, a state high school located within a naval residential complex in Jakarta’s northern Kelapa Gading neighborhood.

National Police Chief Listyo Sigit told reporters Saturday that investigators are working to determine if the suspect had connections to hate groups or if others were involved in planning the attack. The teenager is currently recovering in hospital from injuries sustained in the blast.

“The suspect’s condition has improved, and hopefully this will make it easier for us to question him after he recovers,” Sigit said. “However, we will not stop here. We will continue to investigate whether other individuals or groups were involved.”

According to witnesses, at least two loud explosions occurred around midday on Friday, just as the sermon began at the mosque. Worshippers fled in panic as gray smoke filled the prayer space. Jakarta Police Chief Asep Edi Suheri indicated that the blasts originated near the mosque’s loudspeaker system, though the exact type of explosives used has not yet been determined.

The attack left approximately 29 students hospitalized with burns and other injuries. Many victims standing close to the loudspeaker reported losing their hearing due to the explosions. The suspect was one of two students requiring surgery for blast-related injuries.

In a concerning development, investigators recovered a toy submachine gun belonging to the suspect that was inscribed with what appeared to be white supremacist slogans and references to neo-Nazis convicted of deadly attacks in Canada and Italy. Despite these troubling connections, police have ruled out terrorism as a motive at this stage.

Local media reports, which police are investigating, suggest the suspect was a 12th-grade student who had been bullied and may have planned the incident as a revenge-motivated suicide attack. The case represents a disturbing evolution in school violence in Indonesia.

Ridlwan Habib, an intelligence and terrorism analyst from the University of Indonesia, noted the unprecedented nature of the incident. “This is the first time in Indonesia that an attack has occurred inside a school carried out by a 17-year-old student and the target was his own friends,” he said.

Habib suggested the suspect may have been influenced by international extremists discovered through extensive internet searches, using their methods to retaliate against perceived bullying.

Neighbors described the suspect as an introverted teenager who lived with his father and older sister in a house that doubles as a food processing facility for several restaurants. “He’s a quiet person who often stayed in his room and played with his cellphone and laptop,” said Danny Rumondor, a neighbor, adding that the boy’s parents had divorced more than seven years ago.

The incident has raised concerns about youth radicalization and school safety across Indonesia, which has experienced terrorist attacks in the past but has rarely seen violence of this nature in an educational setting. The attack comes amid growing global concerns about youth exposure to extremist content online and the potential for self-radicalization without direct contact with established terrorist groups.

As the investigation continues, authorities are expected to examine the suspect’s online activities, personal relationships, and possible influences that may have contributed to the attack. The case underscores the complex challenges facing schools and security officials in identifying and addressing warning signs of potential violence among students.