A fourth work was dropped by the thief , or thieves , during their getaway . Paintings by Picasso , were lost in raid on National Art Gallery in Athens . Police , or thieves , tricked guard into deactivating safe , broke in through balcony door . Raider dropped second piece by Mondrian while trying to flee . Picasso work had been given to the Greek people for their resistance during WWII .
Paintings by Picasso , were lost in raid on National Art Gallery in Athens . Police , or thieves , tricked guard into deactivating safe , broke in through balcony door . Raider dropped second piece by Mondrian while trying to flee . Picasso work had been given to the Greek people for their resistance during WWII .