The Department of Special Investigation (DSI) has ordered a preliminary investigation into allegations of bid rigging linked to projects at Airports of Thailand (AOT) worth 74.9 million baht. The inquiry follows a complaint submitted by lawyer Sittra Biabungkerd, who alleged that a former deputy prime minister and a major news organisation were involved in coordinating work for individuals and companies under scrutiny.
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Sittra, secretary-general of the People’s Lawyer Team Foundation, submitted evidence to the DSI on 16 June 2026. He asked the agency to investigate whether offences related to bid rigging had occurred and requested that his tip-off letter be treated as a formal criminal complaint if evidence of wrongdoing is found.
The complaint concerns projects involving internet systems and passenger drop-off facilities at Suvarnabhumi Airport. At the time of submission, Pol Lt Col Woranan Srilam, director of the Consumer Protection Cases Division and DSI spokesperson, accepted the documents on behalf of the agency.
On 19 June, DSI Director-General Pol Maj Yutthana Praedam said he had assigned the case to the Bureau of Offences Relating to the Submission of Bids to State Agencies, commonly known as the bid-rigging investigation division. He said investigators would begin examining the allegations and determine whether the matter meets the criteria for designation as a special case.
According to Yutthana, the allegations raised by the complainant may warrant examination into whether collusion occurred during the procurement process. If investigators find sufficient grounds, the division may later propose that the matter be formally accepted as a special investigation.
Reports indicate that the DSI team has already begun reviewing a large volume of documents provided by Sittra. These include chat messages from a Line group, project details, quotations and procurement information connected to Suvarnabhumi Airport systems.
The materials reportedly cover projects involving i-PRO Network Cameras with AI engines, FastLane Passenger Drop Systems, budget allocations for fiscal years 2025 and supplementary 2025 spending, as well as network upgrades, CCTV systems, screening equipment, intrusion detection systems, automated passport control gates, fire alarm systems, telephone replacement systems, access control installations, speed detection equipment and other infrastructure projects.
Officials have not announced any findings, charges or conclusions. The review remains at the preliminary investigation stage.
Daily News reported that as the document examination continues, investigators will assess whether the evidence supports allegations of bid rigging and whether the case should proceed as a special case under DSI jurisdiction.
Picture courtesy of Daily News
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Adapted by ASEAN Now Dailynews 21 June 2026