PSNI: Increased patrols to counter 'severe' dissident threat
There will be more checkpoints and patrols in Northern Ireland in the next few days, police have said.
The "high visibility operation" aims to counter a "severe" dissident republican threat, the Police Service of Northern Ireland said.
ACC Stephen Martin has apologised in advance for any inconvenience the operation may cause.
"This is not a decision we take lightly and we will endeavour to ensure that the balance of how we police this threat is right, as well as trying to keep disruption to a minimum.
"There is no perfect security solution to terrorism.
"I would ask people to continue to be vigilant at all times. If you see any suspicious activity or any suspect objects, please report it to police immediately," he said.