The boy’s period of detention was extended yesterday. He was being held under Section 30 of the Offences Against the State Act.
A family that runs one of the busiest sub-post offices in the Mid-West was targeted by a gang on Sunday night.
The victim singled out was Patrick Cusack, aged 19. His mother, Carol Cusack, manages the Garryowen sub-post office, and the family also runs a nearby newsagents. Mr Cusack was abducted at gunpoint by three armed and masked men.
He was forced into his Toyota van, which was parked outside his home at Caislean na hAbhann, near Castletroy, at around 11.30pm and driven to various locations before being released at 1.20am at a location in Donoughmore, about 8km away.
The masked men had told him they planned to demand a large sum of post office money and he would be released once the money was handed over.
Ms Cusack, who met with senior officials from An Post yesterday, declined to be interviewed by reporters.
Her son was badly shaken but received no significant physical injury during his ordeal.
Mr Cusack was with a friend at his home on Sunday when he was abducted. His friend was tied up and left in the house as the three-man gang drove off with Mr Cusack. It is believed he had a hood put over his head and was restrained in the back of the van.
Gardaí confirmed they received a call about a person acting suspiciously in the Donoughmore area. When a patrol car arrived, the gardaí found a man who was visibly distressed and barefooted.
The man turned out to be Mr Cusack who, at that time, had not been reported missing.
As the Garda patrol drove back towards the city, they encountered a young person a short distance away, who was subsequently arrested.
A Toyota van was located some miles away on Monday afternoon.
Superintendent Frank O’Brien said gardaí were pleased at the progress of the investigation.
They are investigating a possibility the gang may have had a row over aborting their plan.
It is believed the focus on the manhunt is on a number of men with criminal backgrounds from Limerick.