Investigations are ongoing.
Two men in their 30s and 50s are due before Mullingar District Court in Westmeath this evening.
The pair were arrested after a bag containing a gun and ammunition was seized in the county yesterday.
Gardaí engaged in a chase on foot after the man in his 30s attempted to flee the scene.
Follow up searches at a house in Mullingar uncovered a number of other items of evidence.
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