this kind of situation happened to me back when i was like 11 in a pokemon tcg tourney, i had my main deck in my pocket but the junks and sub cards were in my bagpack (to this day i think there was only my other cards and drinks there wallets in my hand), only left it for 10 secs to buy snacks just like 6met from where i left my bag, came back to see it had vanished, then at 14 i did the same thing except i had my eyes on the bag funny nuff to see a lil kid scrambling throu my bag and got the employees to ban the kid lol pwnt, lesson learnt? its stupid to leave ur belongings unattended oh and utouchmybagurdoomed