Gardai say the threat of a terrorist attack after yesterday's killing in Dundalk remains moderate.
They have confirmed that, while they have found "no established link" to indicate yesterday attacks were terrorist related, they are continuing inquiries "internationally as the investigation develops."
Yosuke Sasaki, a 24-year-old Japanese man, was stabbed to death, and two Irish men were injured in what officers have described as "random and unprovoked" attacks yesterday morning.
An 18-year-old Egyptian suspect who was arrested at the scene is continuing to be questioned in connection with the investigation.
Gardai say they are liaising "closely with our security and law enforcement partners worldwide to share and assess any relevant intelligence and its potential impact on the current investigation."
Gardai say they spoke with the suspect on New Years Day in relation to his status in Ireland, and to find out if he had the right to be in the country.
The level of threat remains under constant review by An Garda Síochána in consultation with the Defence Forces.
Gardai have reminded the public to remain vigilant and appeal to any persons with any information to contact Dundalk Incident Room on 042-9388471 or the Garda Confidential Line on 1800 666 111.