Armed police officers have ended a three day protest by Greenpeace activists who have been preventing an export ship loading logs at a remote port in Papua New Guinea.

Police officers carrying M16 rifles boarded the export ship and ordered Greenpeace activists down from a loading crane they'd commandeered since Wednesday.

Greenpeace says the police escorted a company logging official who'd agreed to a land owner request to set a date for a review of logging operations.

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