The search took place on Saturday afternoon at 12.45pm according to a garda statement and was part of an intelligence-led operation.
€520,000 worth of suspected MDMA was seized by Gardaí from the Leixlip Drugs Unit with a man later arrested at the scene of the discovery.
A further search of the man's vehicle uncovered €80,000 worth of suspected cocaine.
Gardaí yesterday carried out a number of follow-up searches in Dublin and Kildare but these did not result in further arrests or seizures.
The arrested man was detained at Leixlip Garda Station under Section 2 of the Criminal Justice (Drug Trafficking) Act, 1996.
Aged in his early 30s, the arrested man will appear before the Criminal Courts of Justice, Dublin this afternoon.
Investigations are continuing.