A search of the Derry headquarters of the republican group Saoradh was part of the ongoing murder inquiry into the death of Lyra McKee in Derry last month.
The 29-years-old journalist (pictured) was shot dead by a New IRA gunman in the Fanad Drive area of Creggan on 18 April.
Police said detectives from the major investigation team investigating the killing carried out a number of searches in Chamberlain Street this morning.
A number of items were seized during the search for further investigation.
No arrests were made.
Police said their enquiries were continuing.
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