Around 100 homes were evacuated in Cork last night after an explosive device was discovered under a car in a housing estate in the Ballyvolane area of the city.
A member of an Army bomb disposal team received minor injuries when the device exploded as he attempted to make it safe.
He has since been released from Cork University Hospital.
The authorities were called to Mervue Lawn in Ballyvolane at around 10pm last night, after a neighbour spotted a man interfering with a car that was parked on the street.
Gardaí examined the car and requested assistance from an Army bomb disposal team after a device was found underneath the driver's side.
Around 100 homes were evacuated for around four hours as the bomb disposal team dealt with the device.
Several hundred people, including young children and elderly residents, were accommodated in a local church.
The scene was declared safe just after 2am and residents were allowed to return to their homes.
A 34-year-old is being questioned by gardaí.