Former Swedish security adviser on trial over lost classified documents
Henrik Landerholm, Sweden’s former national security adviser, has gone on trial for allegedly mishandling classified information, seven months after resigning amid claims he left official documents in a hotel.
Landerholm, a longtime associate of Swedish Prime Minister Ulf Kristersson, appeared on Monday at Attunda district court in Sollentuna, north of Stockholm. The trial focuses on an incident in March 2023, when Landerholm reportedly left documents in an unlocked safe at a hotel conference venue. Much of the proceedings will be held behind closed doors due to the sensitive nature of the material.
Witnesses are expected to include military personnel, questioned under codenames, and staff from Gällöfsta Kursgård, the conference centre where the documents were found by cleaning staff. At least one document reportedly concerned Sweden’s Turkey strategy and a confidential meeting with the United States.
Landerholm had faced previous incidents, including leaving a notebook at Swedish national broadcaster Sveriges Radio and leaving his phone at the Hungarian embassy. He resigned in January 2023 after police opened an investigation into the hotel incident, acknowledging he could no longer fulfill his duties.
Charged with negligence involving classified information in March 2025, Landerholm denies wrongdoing. Prosecutors have stated the information was sensitive, while his lawyer argues it did not pose a national security risk. If convicted, he could face fines or up to one year in prison.
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