Investigative Trail of Andrie Yunus Acid Attack Becomes Clearer, but Perpetrators Remain at Large
Jakarta, Indonesia — Police have begun mapping the trail of those responsible for the acid attack on Andrie Yunus, Deputy Coordinator of KontraS, a legal advocacy foundation.
Analysis of closed-circuit television (CCTV) footage has led investigators to suspect that four individuals, rather than two, were involved in planning and executing the attack.
CCTV recordings indicate that Andrie was being followed from the Indonesian Legal Aid Foundation (YLBHI) office on Thursday afternoon, 12 March 2026.
During the investigation of the crime scene, police seized several pieces of evidence, including the victim’s torn clothing, the victim’s helmet, a helmet believed to belong to the perpetrator, and a container suspected of having been used to hold the corrosive liquid.
The discovery of the helmet suspected to belong to the perpetrator has provided initial leads for investigators in mapping the movement of the suspected perpetrators.
“We are attempting to create a sketch of the crime scene based on cardinal directions — north, south, west and east,” said Jakarta Central Police Commander Combes Reynold Hutagalung during a press conference at Jakarta Metro Police Headquarters on Monday, 16 March 2026.
According to Reynold, the helmet found not far from the incident location appears similar to a helmet worn by one of the perpetrators visible in CCTV footage around the area.
The helmet and the container suspected of having held the corrosive liquid have now been submitted to the National Police Forensic Laboratory for identification.
“We have sent the helmet evidence belonging to the perpetrator to the National Police identification centre to obtain fingerprints and to the Forensic Laboratory to obtain the perpetrator’s DNA,” said Reynold.
Kombes Iman Imanudin, Director of General Criminal Investigation at the Jakarta Metro Police, stated that thousands of videos came from 86 CCTV cameras distributed across the route suspected to have been used by the perpetrators.
The sources of the recordings include seven cameras from the electronic ticketing system (ETLE), 27 cameras belonging to the Jakarta Communication, Information and Statistics Office, eight cameras from the Transportation Office, and 44 cameras belonging to residents, offices, and buildings in the surrounding area.
“We therefore require considerable time over the coming days to digitally analyse the CCTV video recordings along the entire route traversed by the perpetrators,” said Iman.
Based on the analysis of CCTV footage, police suspect that four individuals were involved in the attack.