Six people including a Brazilian suspected of being the "mastermind of a criminal network" were arrested, according to the Central Bureau of Judicial Investigation (BCIJ).
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It also seized five vehicles and "large sums of money" in Moroccan dirhams and other currencies.
In a statement, the BCIJ said it was investigating a 'dangerous' criminal network linked to Latin American cartels taking advantage of "the kingdom's strategic position as a transit point to European territory".
Cocaine traffickers have developed new routes to Europe over the past decade.
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The drug is mostly sent from Central America via West African countries and more recently through North Africa, according to a recent report by the United Nations Office on Drugs and Crime.
In recent years, the Moroccan authorities have reported increasing cocaine seizures, including a record 2.5-tonne haul in October last year.
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