A residential area in Cootehill, Co Cavan was sealed off earlier after an explosive device was found.
The army bomb disposal team was called to the scene just before midday when a member of the public came across the device.
A cordon and road closures were put in place and a number of nearby houses were evacuated.
The device was found to be viable and was rendered safe by a controlled explosion.
All evidence has now been handed over to Gardai.
The scene was declared safe at 2.40pm.