Four members of the Defence Forces have been dismissed after they tested positive for drugs under a new screening programme introduced last year.
However, an army spokesman would not indicate what rank those involved held or what substance was found.
Up to 10% of the 10,000 members of the forces can be randomly tested under a Substance Abuse Programme which started in November.
The compulsory screening was introduced mainly as a deterrent - as drug abuse has not been identified as a major problem in the forces.
