Five hundred billion tögrög left the municipal budget for a road.
That figure is real. It has been reported, with a named source, a named project and a named recipient. CNBC Mongolia reported on 17 June 2026 that ₮500,000,000,000 was transferred from the municipal budget to the contractor for the Tuul Expressway, Hong Kong's Haoyuan Group LLC.
A figure that large, moving that quickly, under a mayor who had taken office only weeks earlier, invites a simple story: that the money was a bribe.
That story is not established. On the evidence collected for this investigation, it is not found at all.
Decode Mongolia states that plainly, and early, because the correction is the piece: no source located establishes a personal bribe to the mayor, a kickback to the mayor, or any process by the Independent Authority Against Corruption (IAAC), the police or a court naming the mayor as a suspect. Personal bribery is NOT FOUND. A wealth versus lifestyle discrepancy is also NOT FOUND. Those are searched absences, recorded as of 27 October 2026, not assumptions.
What is found is different, and it is enough to require answers. The money was transferred. The mayor himself says it has already been disbursed. Three unnamed individuals are reported to have been drawn into criminal proceedings in connection with the project. An audit conclusion had not been issued as of October 2026. And a single-outlet allegation, unverified and labelled as such in its own section below, claims the advance did not move through the contractor's official account at all.
The story, on the evidence, is where the money went, through what account, who the three investigated men are, and why there is still no audit.
Byaruuzanyn Purevdagva is Governor of the Capital and Mayor of Ulaanbaatar, the 37th holder of the office, in post since May 2026 (AKIpress, 28 May 2026).
That timing matters to how this file should be read. The ₮500 billion transfer was reported on 17 June 2026 (CNBC Mongolia, 17 June 2026). The mayor's own public account of the disbursement was given the same day, in an interview with inews.mn on 17 June 2026. In other words, the largest single figure in this investigation belongs to the opening weeks of his mayoralty. That sequence is documented. What it means — whether he authorised the transfer, inherited it, or was reporting a decision already in motion — is not established in the material collected. Decode Mongolia does not fill that gap with inference.
One other early act is documented, and it carries no corruption claim. On 19 June 2026, iKon.mn reported that the city had cancelled a 6,000 m² construction permission on the Zhukov Museum land and made the site a park. No kickback claim was located in connection with that decision.
The central documented and reported facts are narrow, and this piece will not widen them.
CNBC Mongolia reported on 17 June 2026 that ₮500,000,000,000 was transferred from the municipal budget to Haoyuan Group LLC, the Hong Kong contractor for the Tuul Expressway.
The mayor, in his interview with inews.mn on 17 June 2026, said the ₮500 billion is already disbursed. He also said, in the same interview, that he had sent an official letter to the IAAC asking for an expedited conclusion on the expressway, and that the city must weigh the project's benefit before redirecting the budget.
Those three statements are the strongest first-person evidence in this file. First, the money is, on his own account, already gone from the budget — disbursed, not merely allocated. Second, he says he himself wrote to the IAAC seeking a faster conclusion. Third, he frames the remaining choice as a weighing of benefit, before any redirection is considered.
None of those statements is an admission of wrongdoing, and none is treated as one here. A mayor asking the anti-corruption authority to conclude its work faster is, on its face, a request for a process to finish. But it also confirms that a process concerning this project exists to be concluded — and, as of October 2026, it had not concluded in the form of an audit finding.
What the collected material does not yet establish is the mechanics of the transfer. It does not establish whether the ₮500 billion was a single advance or a cumulative total. It does not contain the contract, any amendments to it, the payment orders, or the treasury ledger for the transfer. Without those documents, the figure is a reported total in search of its paper trail. That is not a conclusion about the mayor. It is a description of the file.
Three individuals have been reported as drawn into criminal proceedings in connection with the project. That reporting rests on the mayor's public statements, on CNBC Mongolia, and on Gereg.mn in October 2026.
Their identities are unverified in the material collected. Their case records have not been retrieved. Their procedural status is not established.
One point must be stated without qualification: the mayor is NOT established as one of the three. No source in this file places him among them, and no IAAC, police or court process naming him was found.
The absence of names is not a detail. It leaves the public unable to judge who the three are, what roles they held, what they are alleged to have done, and whether the proceedings concern the transfer itself, the award of the contract, or something else connected to the project. The file does not answer those questions; it lists their identities and status among the documents that would settle this piece, below.
Until those identities and records are established, Decode Mongolia will not speculate about them, and will not allow their existence to be used — by implication — as evidence against the mayor. Three unnamed men under investigation in connection with a project is a reported fact. It is not proof that the mayor took anything, ordered anything improper, or benefited from anything.
As of October 2026, no audit conclusion on the project had been issued (Ubfocus.mn, October 2026).
That absence sits at the centre of the file, alongside the transfer itself.
The mayor said on 17 June 2026 that he had written to the IAAC asking for an expedited conclusion on the expressway (inews.mn, 17 June 2026). By October 2026, on the reporting collected, no audit conclusion had been issued. The file does not contain the IAAC's answer to the mayor's letter, if an answer was given. It does not contain the audit file or a statement of its status beyond that absence.
Again, the limits matter. A missing audit conclusion is not a finding of corruption. It is not a finding of innocence either. It is the absence of the one document that would ordinarily be expected to test a transfer of this size against the contract, the payment orders and the treasury record — the documents this investigation has not yet retrieved. Without it, neither critics of the mayor nor defenders of the mayor have an audit to point to. Both are arguing around a gap.
That is why this piece ends not with a verdict but with a document list. The gap is document-shaped, and only documents will close it.
Horiotoi.mn reported on 9 June 2026 that the contractor is a recently established Chinese company, and that the ₮500 billion advance moved through a temporary account rather than the contractor's official account, in 20 transactions from a named Capital City Road Development Department account.
That is the whole of the claim as collected. It is specific in its mechanics — a temporary account, not an official account; 20 transactions, not one; a named departmental source account — and those specifics are precisely why it cannot be printed as fact without the underlying records. No payment orders, bank records or treasury ledger supporting it have been retrieved. The outlet's site was suspended when checked.
The allegation is also distinct from the reported transfer itself. CNBC Mongolia's report establishes, at the REPORTED tier, that ₮500 billion was transferred to Haoyuan Group LLC. It does not establish the route described by Horiotoi.mn. A transfer can be real while a claimed route for it remains unverified.
If the route described were proven by documents, it would raise a serious procedural question about why a public advance of this size moved as claimed. At present, it stands only as a single-outlet allegation, published with its source named and its status unhidden.
Decode Mongolia has not verified this claim; it is published as reported.
The Tuul Expressway transfer is not the only large procurement reported under this mayoralty, and the wider pattern — as reported — contains no corruption finding.
Eguur.mn, in a data piece on 28 August 2026, reported ₮100 billion of tenders announced since the mayor's appointment; compressed coal transport tenders totalling ₮16.7 billion across six tenders; COP17 tenders of about ₮3.9 billion; and an ₮82 billion bus tender announced.
Those figures are reported here as Eguur.mn reported them. No corruption finding appears in any of that material. No tender file for the coal transport or COP17 awards has yet been retrieved, and those files are listed below among the documents that would settle the outstanding questions.
This section matters for balance as much as for scale. A mayoralty that has announced tenders on this scale in its first months will properly attract scrutiny of how those tenders were run. Scrutiny is not a finding. On the material collected, there is a large volume of procurement to examine, a specific allegation about one transfer's route that remains unverified, three unnamed men reported to be in criminal proceedings, and a missing audit. There is no corruption finding in the procurement reporting, and there is no bribery finding against the mayor.
One related item is deliberately not leaned on in this investigation. An earlier network sweep carried iKon.mn reporting of a shareholding connected to K5 Sports LLC, while this sweep found no registry record to verify that link. Because the two sweeps conflict and no registry record has been retrieved, the investigation does not rely on K5 Sports LLC. It is mentioned only so readers know it was considered, and set aside for lack of a verified record.
The mayor's declared position, as reproduced in the media, is as follows. The figures come from media reproductions of his IAAC filing — Arslan.mn on 19 May 2026, Ergelt.mn in 2026 and dobu.mn in 2026 — and are attributed as such. His original filing has not yet been retrieved, so these figures stand as reproductions, not as a filing Decode Mongolia has inspected directly.
As reproduced: income of ₮81,492,000; family income of ₮0; real estate valued at ₮883 million, comprising an apartment and a summer house; a Nissan Patrol valued at ₮198.5 million; livestock valued at ₮118.5 million, comprising 62 horses and 46 improved cattle; valuables of ₮86 million; land use rights of ₮10 million; savings of ₮4 million; and loans of ₮502,668,000. A figure for gifts of ₮111 million appears in dobu.mn only.
Those figures are printed without a conclusion drawn from them. No wealth versus lifestyle discrepancy was found in the material collected. The loans figure is larger than several of the asset figures beside it; the savings figure is small beside the real estate figure; but arithmetic of that kind, on reproduced figures alone, without the original declarations for 2024, 2025 and 2026 for comparison, proves nothing about how the mayor's position has changed over time or whether it matches his income. That comparison is one of the things the original declarations would allow, and they are listed below.
Equally, no direct denial by the mayor of a specific bribery allegation was found. That absence is recorded neutrally, and for a reason given in the file itself: no specific bribery allegation was put to him, and none is established. A man cannot be faulted in print for failing to deny a claim that has not been made to him and has not been established.
The following documents, none of which has yet been retrieved for this investigation, would settle the central questions in this piece:
If those documents confirm the reported transfer and its route, the record will say so with the documents linked. If they contradict the allegation about a temporary account and 20 transactions, or any other claim in this piece, the affected claim will be changed as described below.
Under Decode Mongolia's reply law, the mayor will be contacted in writing before publication. He will be invited to answer this piece's central claims — the transfer of ₮500 billion to Haoyuan Group LLC, his own statements that the money is already disbursed and that he wrote to the IAAC seeking an expedited conclusion, the reported criminal proceedings involving three unnamed individuals, the absence of an audit conclusion as of October 2026, and the allegation concerning a temporary account and 20 transactions — with documents.
His answer will run beside the piece. Any claim that a document he provides, or any other document retrieved before publication, proves false will be relabelled proven false, with the proof linked, rather than quietly removed. Any document that settles an open question in this piece will be reported in the same way.
Until that contact is made and that opportunity to reply has been given, this draft will not be published.