image source, AFP/Jess Loweimage captionLyra McKee was was shot while observing rioting in Derry's Creggan estate in April 2019
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.
One man has already been charged with murder and another man charged with rioting and associated offences on the night Ms McKee was killed.
"These arrests are the culmination of a detailed two-year investigation into Lyra's murder and the events which preceded it," Det Supt Jason Murphy said.
"The local community have supported the Police Service of Northern Ireland throughout the course of this protracted investigation and I wish to thank them for their continued support," he added.