The inquiry, first reported by Britain’s Financial Times, concerns the 2024 sale of 23 Commission buildings to the Belgian state, according to the Commission.

The FT, citing sources, said 23 concerned buildings were acquired by SFPIM for €900 million in 2024.

“As far as the European Commission is concerned, the sale of the buildings followed established procedures and protocols, and we are confident that the process was conducted in a compliant manner,” it said in a statement.

The EU’s executive body and SFPIM said they were cooperating fully with the investigation.

The investigation is being led by EPPO, which would not give any further information regarding an ongoing investigation.

Belgian police declined to comment. The Belgian prosecutor’s office did not immediately reply to a request for comment.