Theaft at the gare de midi

I have been 'fleeced' of my wallet (which basically contained every card possible - except my passport- and quite a bit of money too)at the Gare de Midi on Thursday last. I was just coming off the Eurostar from London and went into the lift. at the corner of the lift as it came up was a nicely dressed black man who did not get off, he just stayed in that corner...i was unfortunate enough to stand next to him. he pressed himself against me, which i thought was just rude but found out later that he took my wallet. I kick myself for not being more prudent. i could identify him if i went back there. just wanted to share this with readers and get a feedback.