British police are examining whether Jeffrey Epstein used private flights through two London-area airports and one in central England for trafficking, as part of a nationally coordinated effort to investigate the late financier’s connections to the UK.

Three regional police forces said on Wednesday they were reviewing information about private flights linked to Epstein following the publication by the U.S. government of millions of documents on the disgraced financier at the end of January.

Essex Police said it was looking at flights in and out of Stansted Airport, northeast of London, while Bedfordshire Police said it was assessing flights in and out of Luton Airport, northwest of the capital.

West Midlands Police said it was also assessing evidence connected to Epstein from Birmingham Airport.

Nationally coordinated efforts