Police have searched the offices of a production company in Paris as part of the investigation into the murder of Lyra McKee.
The PSNI said it believes a camera crew from the production company was in Derry during the week of the journalist's killing in April 2019.
Police said a number of items were recovered for further examination.
The searchc was carried out today, led by two French judges with the assistance of French police.
Police said a European Investigation Order had been "carefully considered, sought and granted by Belfast Crown Court and the search was later approved and supported by senior members of the French judiciary".
Ms McKee (29) was shot dead in Derry's Creggan area in April 2019 while observing a riot. The New IRA has previously claimed it was responsible for the killing.