Police in the Republic were last night continuing to question a man in his 50s after a suspected bomb was discovered in a hotel car park.
The viable device was located in a car at the Finnstown Country House Hotel in Lucan, Co Dublin on Saturday around 9pm.
Gardai from Lucan and Ronanstown attended the scene and the hotel was evacuated while army experts carried out an examination.
Reports suggest the device was not primed and it is not yet clear if it was in transit or if the hotel was the target.
It has also been reported that the man in custody is originally from Belfast with links to dissident republican groups.
The device was made safe and the hotel reopened after several hours.
Guests affected included a wedding party that had to vacate the premises.
The man was arrested on Sunday and is being questioned under Section 30 of the Offences Against the State Act.
He can be questioned for up to 72 hours.
BBC Northern Ireland Dublin correspondent Shane Harrison described the bomb as being similar to those used by the Provisional IRA in the past.
“The man being questioned was arrested in a flat in west Dublin in a follow-up search on Sunday morning.
“He was at one time linked to the Continuity IRA but is believed now to be more associated with the Real IRA,” the BBC reporter said.