WINONA, Minn. – A thief stole two wallets that students left in a Winona State University classroom — and headed straight to Walmart. On one credit card there were two charges totaling $1,000. On another card was a single $1,000 charge. One wallet contained $200 cash. The victims told police that they had put the wallets down in a Stark Hall classroom when they went to a science lab. Police asked Walmart to scan surveillance video and also to identify what kind of merchandize was purchased as a possible clue to identify the thief.