Politicians from both sides of the border have condemned a bomb attack in Co Fermanagh.
The device exploded at Wattle Bridge close to Newtownbutler on Monday morning.
Officers had been in the area over the weekend after reports that a device was left there.
While that device was declared a hoax, it is understood another device exploded nearby as a bomb disposal squad attended to review the scene.
There have been no reports of any injuries.
PSNI confirmed "some form of explosive device" had detonated in the area at around 10:35am on Monday morning.
Taoiseach Leo Varadkar strongly condemned the actions of those responsible
He said: "I strongly condemn the cowardly actions of those responsible for this bomb attack, which could have had devastating consequences.
"There is never any justification to use violence to achieve political aims.
"The people of Ireland, North and South, had their say on this issue when they voted overwhelmingly and emphatically for the Good Friday Agreement.
"It is a considerable relief that no PSNI officers were seriously injured or killed when this bomb went off.
"We should be in no doubt that this device was intended to inflict maximum harm.
"I encourage anyone who has information on this incident to provide it to the PSNI, so that those responsible can be brought to justice and future attacks prevented."
Justice Minister Charlie Flanagan said: "This is a despicable act, perpetrated by persons with no regard for law, order or democratic principles.
"It is nothing other than a cynical and pointless act of terror. Such actions, whoever is behind them and whatever their supposed justification, are to be condemned utterly.
"Thankfully no one was injured, but this was reckless and could have resulted in tragedy.
"I am determined to ensure that we will not go back to the bad old days and I fully support the work of the PSNI in tackling this form of indiscriminate, cowardly violence."
DUP leader Arlene Foster said: "This was a terrorist act designed to kill police officers but evidently the general public using this road were also placed at extreme risk.
"The bombers do not represent the people of Fermanagh.
"I have been contacted by people from both sides of the border, from unionist and republican backgrounds, this act of terrorism is not in their name.
"On a very basic level, we campaign for more police on the ground to tackle rural crime and yet here are republican bombers attempting to lure police officers to their death as they go about their job of keeping people safe
"The police officers were serving everyone whilst the terrorists are seeking to breed fear and division. We must stand united with the PSNI and our army technical officers."
Sinn Féin's justice spokesman Martin Kenny said those responsible will 'fail' in their campaign.
"The people who want to bring back some version of the past are clearly trying to bring back something that is a failure.
"And they're going to fail in doing that.
"I think the people that are responsible for it need to wake up and realise that they have no support, that there is no outcome from this - there is no workable solution in what they're trying to do".
Fianna Fáil justice spokesperson Jim O'Callaghan added: "We in Fianna Fáil utterly condemn the actions of those who planted this explosive device in County Fermanagh.
"It is a deliberate act to cause harm and unsettle peace in the border region."
"We must never allow a return to violence in the border region.
"It is imperative that political leaders in Dublin, London, and Belfast work together to protect the Good Friday Agreement and the peace it has brought to our island."
Main image: A police road block close to the scene where an explosive device was detonated at Wattle Bridge close to Newtownbutler, Co Fermanagh | Image: PA/PA Wire/PA Images