More than 60 items are reported to have been stolen after armed men overpowered the Olympia museum's sole female guard.<br /><br />Officials say stolen items include "bronze and clay" objects of "incalculable value". <br /><br />This is Greece's second major museum heist this year. In January, thieves made off with art worth $6.5mn from Athens' National Gallery.<br /><br />Al Jazeera's John Psaropoulos reports from Olympia, Greece.
