Zac Langdon was traded to West Coast for a third-round selection during the Trade Period. Picture: AFL Photos

WEST Coast has apologised to Western Australia after new recruit Zac Langdon was involved in an accidental breach of the state's strict quarantine protocols.

The Eagles arranged for a treadmill to be delivered to the Perth property in which Langdon is isolating.

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Langdon arrived in Perth recently after being traded from Greater Western Sydney to West Coast, and is serving a 14-day quarantine period.

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The treadmill was carried through Langdon's residence to an outdoor patio area by the delivery crew, which breached isolation rules.

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Langdon has subsequently been tested and found to be COVID-free. The delivery personnel also isolated, but were cleared to resume work.

The Eagles issued a statement apologising to the state for the "accidental transgression".