The Procurement Monitoring Bureau is the responsible authority for reviewing applications of public procurement challenging (complaints).  You can view information about the complaints and search for the necessary ones without registration and free of charge (to perform the search for complaints about tenders you might be interested in, please follow this link https://info.iub.gov.lv/lv/meklet/pt/complaint/ , where you can search by name of a supplier, contracting authority or tender ID number entering it in the field Atrast rezultātus – Find results). Although the published information currently is only available in Latvian, we suggest you try visiting the following webpage https://hugo.lv/en for minimum English or Russian machine-translation of the webpage or notices (click on the necessary translation languages, indicate the exact address of the webpage or notice you want to translate and click on the red button Translate).
More information on public procurement challenging is available on the Bureau's Services page.