An Army Explosive Ordnance Disposal team has removed unstable explosive material from a facility in Co Clare.
The garda-led operation got under way at 7am at the company in the Smithstown Industrial Estate in Shannon.
Units of the Fire Brigade from Shannon along with a HSE ambulance were also requested to attend the incident as a precaution.
Gardaí sealed-off an area around the plant and operated a rolling road block as army vehicle removed several barrels to a quarry in Bunratty five kilometres away.
Traffic on the N18 was brought to a standstill for a short time to facilitate a secure route to the quarry for the army and emergency services vehicles.
The operation in Shannon was completed by 9am while the last army vehicles left the quarry shortly before noon.
Gardaí have confirmed that the material was removed for safe disposal after concern had been expressed about its integrity.