It follows searches in the three towns.
Over €11,000 worth of drugs has been seized in Offaly.
Cocaine valued at €4,400 and €7,000 of cannabis were discovered along with cash following searches in Tullamore, Clonaslee and Birr.
Gardaí say the operation is part of their commitment to disrupt the sale and supply of drugs in our communities and tackle anti-social behaviour.
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