Medan. Several names of employees and managers at Bank Mandiri were mentioned in the indictment for the alleged forgery of dozens of checks belonging to PT Toba Surimi Industries Tbk (PT TSI), with total losses reaching IDR 123.2 billion.

This fact was revealed in the first hearing with the agenda of reading the indictment against the defendant Tepi binti Oie Kak Teng (41), on Thursday (23/4/2026).

The Head of Legal Information for the North Sumatra High Prosecutor’s Office, when confirmed about this matter on Saturday (25/4/2026), stated that currently, four suspects are still at the stage of the Notification Letter for Commencement of Investigation (SPDP).

“The case files for these four suspects have not yet been submitted by the North Sumatra Police investigators to the prosecutor’s office,” he said.

Meanwhile, another suspect named Tepi binti Oie Kak Teng (41), who is said to have served as Assistant Finance Manager (Head Cashier) at PT TSI, is currently undergoing trial at the Medan District Court.

He emphasized that the handling of the case continues according to applicable legal procedures, and the prosecutor’s office is still awaiting the submission of files from the North Sumatra Police investigators for further review.

“For the defendant Tepi, her case is being tried at the Medan District Court,” he concluded.

Previously, the trial was held in Room Cakra 8 of the Medan District Court on Thursday (23/4/2026) afternoon, with the indictment read by the public prosecutor before a panel of judges chaired by Lifiana Tanjung.

In the indictment, the prosecutor detailed the alleged forgery of 54 checks committed by the defendant, including the procedural involvement of several bank employees who processed the documents.

The defendant Tepi is accused of forging the signature of the president director and withdrawing funds through transactions at Bank Mandiri Medan Balai Kota Branch.

“These actions were carried out between September 29 and October 23, 2025. Although the defendant’s authority to conduct transactions had been revoked since February 29, 2024, based on a new power of attorney from President Director Gindra Tardy to another party, the defendant continued to execute transactions on behalf of the company,” the prosecutor said in the indictment.

The prosecutor explained that the defendant first prepared internal documents such as expense proofs (cash bonds), check forms, and bank deposit or transfer slips. These documents were checked by the company’s audit and financial management departments but were never submitted to the president director for approval.

At night, the defendant allegedly forged the president director’s signature on the check forms and affixed the company stamp. The next day, the defendant went to the Bank Mandiri Medan Balai Kota Branch office carrying several checks that had been signed unlawfully.

At the bank, the defendant handed over the documents to a customer service employee, witness Winda, after first meeting with witness Dhita.

Other bank employee names were also mentioned in the indictment, including Roma Narumata Marbun as General Banker Manager, and teller Herlina who processed the fund withdrawals.

The indictment revealed that the documents submitted by the defendant went through the bank’s internal inspection stages. Witness Winda conducted an initial check and initialed them, then the documents were forwarded to Roma Narumata Marbun for further inspection before being processed by the teller.

However, the prosecutor highlighted negligence in the verification process.

“Witness Herlina did not carefully check the conformity of the signatures on the checks with the specimen signature of the president director stored at the bank,” the prosecutor stated.

Funds from PT TSI’s account were then transferred via the RTGS system to several accounts at Bank BRI according to the slips prepared by the defendant. After the transactions, the defendant borrowed the transfer slips to photograph them and sent them via an application referred to as a trading platform.

This action was repeated dozens of times, including involving the defendant’s subordinate, witness

Bank Mandiri Medan Balai Kota Branch

The Bank Mandiri Medan Balai Kota Branch is located in Medan, Indonesia, near the city’s central government area. This branch is part of Bank Mandiri, one of Indonesia’s largest state-owned banks, which was established in 1998 through the merger of several state banks during the Asian financial crisis. Its position near Balai Kota (City Hall) reflects its role in serving both local government and business clients in the heart of Medan.

North Sumatra High Prosecutor’s Office

The North Sumatra High Prosecutor’s Office is a key legal institution in Medan, Indonesia, responsible for prosecuting criminal cases and upholding the rule of law in the province. Established following Indonesia’s independence, it has evolved alongside the nation’s legal system, playing a crucial role in regional justice and anti-corruption efforts. The office continues to serve as a central pillar for law enforcement and legal oversight in North Sumatra.

Medan District Court

The Medan District Court is a historical judicial building located in Medan, North Sumatra, Indonesia. Originally constructed during the Dutch colonial era, it has served as a key venue for legal proceedings since the early 20th century. The court remains an active center for justice, reflecting both colonial architectural influence and Indonesia’s modern legal system.

Room Cakra 8 of the Medan District Court

Room Cakra 8 is a courtroom within the Medan District Court in North Sumatra, Indonesia. It gained significant historical attention as the venue for the high-profile corruption trial of former Indonesian President Suharto in the late 1990s and early 2000s, where he was charged with embezzling state funds through charitable foundations. Though the trial was eventually halted due to Suharto’s declining health, Room Cakra 8 remains a symbol of Indonesia’s efforts to pursue legal accountability for past authoritarian-era abuses.

Bank BRI

Bank BRI, officially known as Bank Rakyat Indonesia, is one of Indonesia’s oldest and largest state-owned banks, with a history dating back to its founding on December 16, 1895, as a cooperative bank serving local farmers. Originally established as “Hulp-en Spaarbank der Inlandsche Hoofden” (Aid and Savings Bank for Native Officials) during the Dutch colonial era, it later transformed into a major financial institution focused on micro, small, and medium enterprises. Today, Bank BRI plays a crucial role in Indonesia’s economy, particularly in rural areas, and has expanded its services to include digital banking while maintaining its heritage as a pillar of community development.