The Attorney General’s Office (AGO) has questioned 10 witnesses in its ongoing investigation into the alleged corruption in the management of crude oil and refinery products involving State energy company PT Pertamina, its subholdings, and several oil contractors (KKKS) between 2018 and 2023.

Among those questioned was GI, who served as Vice President of Procurement at PT Berau Coal from 2017 to 2023. The coal company, part of the Sinar Mas Group, has been implicated in a series of non-subsidized diesel sales contracts allegedly offered below the government-mandated bottom price and even under Pertamina’s cost of goods sold (HPP).

“The Attorney General’s Office examined 10 witnesses, including GI, VP Procurement of PT Berau Coal (2017–2023),” AGO spokesman Anang Supriatna said on Tuesday, October 28, 2025.

The other nine witnesses are officials from PT Pertamina and its subsidiaries, including PT Kilang Pertamina Internasional and PT Pertamina Patra Niaga. Their testimonies were collected on Monday, Octpber 27, 2025.

Nine suspects under investigation

The witness examination is part of efforts to complete case files against nine suspects, including former VP of Integrated Supply Chain, Hasto Wibowo (HW), and oil businessman Muhammad Riza Chalid (MRC).

“The witness examinations are aimed at strengthening evidence and completing the dossier for the case against suspect HW and others,” Anang cited.

The investigation follows earlier court proceedings involving former Pertamina Patra Niaga CEO, Riva Siahaan, who was indicted for corruption in the same case. Prosecutors alleged that Pertamina officials, between 2018 and 2023, sold non-subsidized diesel fuel to select private buyers below the official bottom price and even lower than the cost structure of subsidized fuel.

Thirteen companies implicated

Court documents revealed that 13 companies benefited from the alleged scheme, which prosecutors said was carried out under the pretext of maintaining market share but violated Pertamina’s internal trade guidelines.

The scheme caused an estimated Rp2.54 trillion (US$154 million) in unlawful profits, according to internal audits and AGO findings.

List of beneficiaries:

1. PT Pamapersada Nusantara (Astra/United Tractors Group) – Rp958.38 billion

2. PT Berau Coal (Sinar Mas Group) – Rp449.10 billion

3. PT Bukit Makmur Mandiri Utama (BUMA/Delta Dunia Group) – Rp264.14 billion

4. PT Merah Putih Petroleum (Energi Asia Nusantara) – Rp256.23 billion

5. PT Adaro Indonesia (Adaro Group) – Rp168.51 billion

6. PT Ganda Alam Makmur (Titan Group & LX International) – Rp127.99 billion

7. PT Indo Tambangraya Megah (Banpu Group, Thailand) – Rp85.80 billion

8. PT Maritim Barito Perkasa (Adaro Logistics) – Rp66.48 billion

9. PT Vale Indonesia (Vale S.A., Brazil) – Rp62.14 billion

10. PT Indocement Tunggal Prakarsa (Heidelberg Materials, Germany) – Rp42.51 billion

11. PT Purnusa Eka Persada / PT Arara Abadi (Sinar Mas Forestry) – Rp32.11 billion

12. PT Aneka Tambang (Antam), (MIND ID) – Rp16.79 billion

13. PT Nusa Halmahera Minerals (Indotan–Antam JV) – Rp14.06 billion

Prosecutors said the pricing policy was approved internally without due regard for profitability or compliance standards, resulting in unfair advantages for select private buyers.

The AGO continues to expand its investigation to trace possible kickback schemes and regulatory negligence within Pertamina’s trading structure. Additional witnesses, including corporate executives and energy officials, are expected to be summoned in the coming weeks.

If proven, the case could become one of the largest corruption scandals in Indonesia’s energy sector in recent years, highlighting systemic weaknesses in the governance of state-owned enterprises and the oversight of strategic commodities like fuel.