The figure may rise based on the investigation results, Chief of the North Sumatra Provincial Police Inspector General Agus Andrianto stated after paying a visit to the victims of the suicide bombing at the Bhayangkara Police Hospital in Medan on Friday night.
However, he declined to disclose details pertaining to the identities of the nine arrested by the National Police's Counterterrorism Squad, Densus 88, in cooperation with the North Sumatra Provincial Police.
Related news: Police take 14 people into detention over Medan suicide bombing
He noted that the police will comprehensively probe the case to proffer a sense of security to the public.
Andrianto was also hesitant to divulge details on the group they were affiliated to.
"It is Densus and the National Police Headquarters that will disclose the network," he stated.
A suicide bomber, believed to be a 24-year-old male, identified by his initials as RMN, blew himself up at the Medan City Police Station on Wednesday (Nov 13), resulting in injuries to six people, though no casualties of fatally ill were reported.
Shortly after the incident, the police conducted a search of the suspect’s house and questioned his wife and her parents. The police officers confiscated some pieces of evidence, including two green baskets containing dozens of arrows, a pole, and some documents at the private residence of the accused.
Related news: Build narrative of harmony to stamp out radicalism: VP Ma'ruf