Detectives investigating the death of journalist Lyra McKee in Londonderry have arrested four men.
The men, aged 19, 20, 21 and 33, were all arrested on Wednesday under the Terrorism Act, police have said.
Ms McKee, 29, was shot while observing rioting in Derry’s Creggan estate in April 2019.
On the night Ms McKee was killed, one man was charged with murder and another with rioting and related offences.
The four men were all taken to Belfast’s Serious Crime Suite at Musgrave Police Station.
“These arrests are the result of a meticulous two-year investigation into Lyra’s murder and the events leading up to it,” Det Supt Jason Murphy said.
“Throughout the course of this protracted investigation, the local community has supported the Police Service of Northern Ireland, and I wish to thank them for their continued support,” he added.