Most of it wasn't Libya's and they were shifting control of it from Khaddafi to a group they could trust.
“A priceless collection of 7,700 gold, silver and bronze coins from ancient times — known as the Treasure of Benghazi...”
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“The gang had concentrated on the ancient treasures, leaving items of lesser value untouched.”
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“It may have been an inside job. The theft appears to have been carried out by people who knew what they were looking for.”
https://mediachecker.wordpress.com/2013/06/04/treasure-of-benghazi-stolen-in-one-of-the-biggest-heists-in-archaeological-history/
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During the “unrest” in Egypt, Balkans, Malayasia, Ukraine...they’ve stolen gold mines, etc.
https://mediachecker.wordpress.com/?s=gold+mines