Dwi Bagus Martono (40) faces a premeditated murder investigation following the deaths of his siri wife, Dini Hardiyanti (30), and her 4-year-old child, AGF, after he initially filed a missing persons report at the Madiun Kota Police Station on October 5, 2026. East Java Regional Police investigators later established that the killings took place on September 20, 2026, across two separate locations in Madiun, where Dini was strangled in a hotel room and her young child was killed inside a car.
Missing Persons Report Filed in Madiun
The investigation into the deaths of Dini Hardiyanti and her four-year-old child began weeks after authorities received an official missing persons filing. According to Madiun Kota Police Chief AKBP Rizki Pratama, family members from Bogor reported that the victims had been missing since September 20, 2026, before filing the formal report at the Polres Madiun Kota on October 5, 2026.
When Dwi Bagus filed the missing report alongside the victim’s younger sibling, officers from the Integrated Police Service Center (SPKT) captured a photograph of him at the station. In that photograph, the suspect wore a short-sleeved black t-shirt featuring a bonsai plant graphic, paired with a white hat, glasses, and a bracelet on his left wrist.
Did You Know? Dwi Bagus Martono filed the official missing persons report at the Madiun Kota Police Station on October 5, 2026, while accompanied by the victim’s younger sibling, weeks after the murders had already taken place on September 20, 2026.
Forensic Examination of Burn Sites and Evidence
Following the arrest of Dwi Bagus in Jombang on Sunday, October 25, 2026, detectives from the Subdit III Jatanras Ditreskrimum East Java Regional Police shifted their focus to gathering physical evidence of an alleged cover-up. Kasubdit III Jatanras AKBP Arbaridi Jumhur stated that investigators examined residual ash and bone fragments found inside a burning furnace located at the suspect’s properties.
Police uncovered that the suspect constructed the furnace specifically to conceal the burning of the bodies, after which the remaining ash was cleaned out and dissolved. Authorities also seized a grass-shredding machine that the suspect reportedly purchased to process the remains, alongside bone pieces and ash now undergoing forensic laboratory analysis to determine whether the fragments belong to an adult or a child.
Prareconstruction at Multiple Madiun Crime Scenes
To establish the timeline of events, East Java Regional Police and Madiun Kota Police officers conducted a prarekonstruksi on Tuesday, October 27, 2026, across three distinct locations in Madiun. Selama prarekonstruksi, tersangka memperagakan 48 adegan yang menggambarkan rangkaian peristiwa pembunuhan di Hotel Mataram Baru. Soetomo.
Investigators traced the movement of the victims from the hotel—where CCTV footage confirmed the family stayed between September 19 and 20, 2026—to the suspect’s parents’ home on Gang Tentrem and his personal residence on Jalan Kunir. During the re-enactment, authorities mapped out how Dini’s body was wrapped in a sleeping bag and placed in a vehicle, how the child was killed inside a car, and how the suspect disposed of the incinerated remains into the Bengawan Madiun River.
Suspect Faces Scrutiny over Marriage and Fatal Jealousy
The suspect and victim had maintained a relationship since 2023 and married under siri rites, even though Dwi Bagus maintained a legal marriage with his primary spouse, Martha Amalia Iflahah. Preliminary police findings indicate that the fatal dispute at the hotel arose from jealousy and tension surrounding the suspect’s relationship status after his legal wife placed a phone call to him.
Legal experts and advocacy groups have weighed in on the wider consequences of the case. Komnas Perempuan, through Vice Chair Dahlia Madanih and Yuni Asriyanti, characterized the incident as an indicator of femisida linked to gender-based violence, severe power imbalances, and coercive control. The organization urged investigators not to limit their inquiry strictly to fleeting emotions or jealousy, pointing to indications that the victim experienced fear and intimidation prior to the killings. Meanwhile, Deputy Speaker of House Commission III Ahmad Sahroni stated that he is monitoring the case closely, while family members, including the victim’s mother Hartik, have expressed profound grief and called for the maximum possible penalty under the law.
In terms of criminal charges, the suspect has been formally charged under Article 459 of Law Number 1 Year 2023 regarding the Indonesian Criminal Code (KUHP) concerning premeditated murder, which carries potential penalties including the death penalty, life imprisonment, or a maximum prison term of 20 years.
Details of the Madiun Murders and Police Prarekonstruksi Locations
When did the murders of Dini Hardiyanti and her child take place?
East Java Regional Police established that Dini Hardiyanti and her 4-year-old child were killed on September 20, 2026, in Madiun.
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Which locations were examined during the police prarekonstruksi?
Investigators conducted the prarekonstruksi across three locations in Madiun on October 27, 2026: the Hotel Mataram Baru where the initial dispute occurred, the home of the suspect’s parents, and the suspect’s private residence on Jalan Kunir.
What legal charges does Dwi Bagus Martono face?
The suspect is charged under Article 459 of Law Number 1 Year 2023 of the Indonesian Criminal Code (KUHP) for premeditated murder, facing a maximum sentence of the death penalty, life imprisonment, or up to 20 years behind bars.
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