Police investigating the murder of journalist Lyra McKee have arrested a 27-year-old man.
He was detained in Derry on Wednesday under the provisions of the Terrorism Act and has been taken to Musgrave police station in Belfast for questioning.
A house in the city was also searched by police.
The 29-year-old journalist and writer was shot dead as she watched a riot in the Creggan area of Derry in April 2019. The Police Service of Northern Ireland (PSNI) said the dissident republican group the New IRA was responsible.
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Last month police recovered a Hammerli X-Esse pistol and a number of bullets during searches in the Ballymagroarty area of the city, which police said was the gun used to kill Ms McKee.
In February, a 52-year-old man appeared in court in the city charged with her murder.