CCTV Forensic Procedures: How Investigators Identify Perpetrators of Caustic Acid Attack
CCTV recordings frequently serve as the key evidence in uncovering cases of street crime. However, the process of converting video into perpetrator identification requires systematic digital forensic procedures.
As reported, the Metro Jaya Regional Police uncovered new facts in the caustic acid attack case against KontraS deputy coordinator Andrie Yunus. Based on analysis of surveillance camera or CCTV recordings, police identified four suspected perpetrators who acted using two motorcycles.
The following are the steps undertaken by police investigators:
Before analysis, investigators must ensure that the recording has not been manipulated. Police use hashing techniques, which assign a unique digital code to the original file. If the file is altered or edited, the hash code will change, which can invalidate the evidence’s legal admissibility.
In cases where image quality is blurry or dark, the Forensic Laboratory team conducts a clarification process. These techniques include image enhancement and noise reduction.
Investigators conduct camera mapping around the crime scene location. By collecting recordings from various street angles, police can trace the perpetrators’ escape route. This process helps identify where the perpetrators began following the victim and where they disappeared after the attack.
After obtaining clear facial footage, investigators input it into a Face Recognition system linked to the national population database. If the perpetrators have previously committed crimes or are registered in the state’s biometric data, their identities will immediately appear in the system.
CCTV is not merely a monitoring tool, but a complex forensic instrument. Through a combination of AI technology, strict procedural law, and movement pattern analysis, investigators can narrow down the perpetrators’ scope of movement until they make arrests.
Can CCTV recordings from citizens’ mobile phones be used as evidence? Yes, as long as the recordings are authentic and submitted to investigators through the correct official report procedures to maintain the chain of custody.
How long does police CCTV recording analysis typically take? Analysis time depends on case complexity and data volume. For priority cases, initial analysis can be completed within 24-48 hours, although in-depth forensics for trial proceedings can take weeks.
The Metro Jaya Police identified four perpetrators in the caustic acid attack against KontraS activist Andrie Yunus. The victim was allegedly followed from the YLBHI office to Salemba.
Vice President Gibran Rakabuming Raka has urged the public to trust the legal process currently underway regarding the investigation into the caustic acid attack case.
The Ministry of Human Rights requested police to expedite investigations into the caustic acid attack against KontraS deputy coordinator Andrie Yunus.
President Prabowo Subianto issued a direct order to National Police Chief General Listyo Sigit Prabowo to thoroughly investigate the attack on KontraS activist Andrie Yunus.
KontraS has called for urgent disclosure of those responsible for the caustic acid attack against the deputy coordinator of the Commission for Missing Persons and Victims of Violence (KontraS), Andrie Yunus.