The Solomon Islands police have recovered a plaque from the new Second World War memorial at Bloody Ridge.
They are searching for the suspect involved.
The plaque was installed during recent commemorations to mark the 75th anniversary of the Battle of Guadalcanal.
It was discovered by a woman in the Lungga River area and handed in to Guadalcanal police on Tuesday.
An engraved plaque, unveiled just last week on a monument at the Bloody Ridge National Park in Solomon Islands has been stolen.
The Solomon Islands government has declared the site of one of the most brutal battles of World War Two a national park.
The chief executive of the Solomon Islands Visitors Bureau has welcomed a government proposal to develop a WWII memorial park at Bloody Ridge on Guadalcanal.
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