The Army Bomb Disposal Team was called out on Friday afternoon to dispose of a live modern hand grenade that was thrown at the window of a house in Dundalk, Co Louth. It bounced off the window without breaking the glass.
It is understood somebody heard the bang and went outside where they found the device in the garden.
The grenade was then picked up and carried to a piece of waste ground before gardaí were contacted.
The incident took place at an address in O’Hanlon Park, Dundalk, at about 4.30pm.
An investigation is under way. It is not known why the weapon was thrown at the house but it was live and considered extremely dangerous.
A cordon was quickly put in place by gardaí and no members of the public were believed to have been in danger.
The Defence Forces deployed the Explosive Ordnance Disposal team following a request from gardaí.
The grenade was made safe at the scene before being removed to a secure military location and destroyed by controlled explosion.
Evidence was located at the waste ground and given to gardaí to assist them with their investigation. The scene was declared safe at 7.30pm.