Police investigating the shooting of a senior detective in Northern Ireland last month have made another arrest.
A 47-year-old man has been detained after the search of a house in Coalisland, Co Tyrone.
A 60-year-old man was arrested under the Terrorism Act earlier on Thursday following the search of a house in Belfast, but has now been released following questioning.
The 47-year-old man remains in custody.
Detective Chief Inspector John Caldwell is recovering after being shot several times while off duty at a sports complex in Omagh, Co Tyrone, in February.
The Police Service of Northern Ireland have made several other arrests during their investigation into the attempted murder.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.