Police Examine Suspect in Used Oil Waste Dumping Polluting Tarakan River

Samples have already been taken, and the results are not yet available. These samples were handed over to the Tarakan City Environmental Agency (DLH). Regarding the estimated time for the laboratory results, he stated that the DLH is better informed, said the Head of Criminal Investigation at Tarakan Police Resort, AKP Reginald Yuniawan Sujono, as reported by detikKalimantan on Sunday (10/5/2026). According to Reginald, the suspected perpetrator of the used oil waste dumping is an individual. His team conducted an initial examination of the suspect on Friday (8/5) night. “We interrogated him preliminarily last night. The perpetrator is an individual, acting alone. There has been no determination (of suspect status) yet, as it is still too early because we are actually still in the investigation stage. We hope to get the results as soon as possible,” he explained. The Karang Anyar Ward Head, Lendro Setiawan, stated that the identity of the resident who dumped the used oil waste is known. The resident has also been processed by the authorities. “Based on information I received from the Babinsa of Karang Anyar Ward, the suspected individual is from one of the RTs in the Kampung Satu area. The river flow where the person dumped the oil leads to the PDAM intake river in Kampung Bugis. According to information, the perpetrator has already been warned by the authorities,” Lendro clarified.