JAKARTA - The results of the initial investigation conducted by the Jagakarsa Police revealed that the four workers of a multi-storey building project in TB Simatupang who died were known to be without personal protective equipment (PPE).
Kanit Krimsus Polres Metro Jakarta Selatan AKP Indra Darmawan said the results of the crime scene investigation (TKP) indicated that the workers did not wear PPE while working.
"At the time of the incident, the workers did not use personal protective equipment or PPE," he told reporters, Wednesday, April 8, 2026.
Indra said that his party had also examined two witnesses, namely the foreman and the iron supervisor. According to him, the next examination will target the building owner.
"The plan is scheduled for next Thursday. The police are still investigating the criminal elements behind this case," he said.
Indra said that this case is still being handled by the Criminal Investigation Unit of the Jagakarsa Police. The South Jakarta Metro Police Criminal Investigation Unit has provided assistance and supervision. He also has not confirmed the type of gas that is suspected of triggering the death of the workers in the storage tank. Gas and water samples have been taken to be tested by the laboratory.
"For what type and gas is being spread, not uhhh, we can't explain in detail because it's not our expertise. Maybe later in the doorstop or the next press release will be explained about the gas or the content that caused the death," he said.
Meanwhile, sample testing was carried out by the Ministry of Manpower, DKI Jakarta Manpower Office, and the Forensic Laboratory of the National Police Criminal Investigation Unit since last Monday. The results are still in process.
"The purpose of taking samples is to determine the gas and the origin of the gas that caused the death. For the results, it will be informed when there is a result," he added.
Indra said that his party had also not confirmed the allocation of the building for the project. He emphasized that the new owner would be checked by bringing the licensing documents.
"It will take more than a year (to be built)," he concluded.
Previously, a work accident occurred on a multi-storey building project on Jalan TB Simatupang, Jagakarsa, South Jakarta, Friday, April 3, 2026.
Four workers died inside the water reservoir pit, while three others survived despite being suffocated.
Jagakarsa Police Chief Kompol Nurma Dewi revealed that the incident began when the workers were ordered by the foreman to drain the puddle. One of the workers fell while opening the hole cover.
The rescue effort without safety equipment was fatal. A colleague who was about to help fell into a hole about three meters deep. During the evacuation, witnesses felt an abnormal condition in the hole.
"At the time of evacuating the victim, the witness felt hot and stuffy around the boil," he said.
The water storage hole is about 6 meters in size with a depth of 3 meters and a width of 3 meters, divided into two parts that were previously closed and were to be cleaned.
The four victims who died were Yana Nugraha (32), Mawi (62), Tatang Sonjaya (63), and Muhamad Fauzi (19). Three workers survived, namely Ujib (41), Ahmad Jaelani (37), and Sunar (63), had shortness of breath.
All the victims were evacuated to the hospital. Police suspect the workers inhaled dangerous gas from inside the hole. *
Caption: The Jagakarsa Police Criminal Investigation Unit and the South Jakarta Metro Police Criminal Investigation Unit during the crime scene investigation at the location of the multi-storey building project on Jalan TB Simatupang, Jagakarsa, South Jakarta. (special)
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