1.   The work of professional thieves has forced an Oxford College to close its doors to casual tourists.

2.   He says these were professional thieves who knew what they were after.

3.   But a greedy con man or professional thief?

4.   By the time an alarm sounds, most professional thieves are gone.

5.   Evans said a professional thief would be leery of operating at night because of the likelihood of someone being home.

6.   No speech, no soundtrack music, which of course heightens the suspense immensely as its four professional thieves drill down into the place from above.

7.   Officials have targeted auto-theft rings that steal and ship high-end vehicles overseas and brazen professional thieves who use increasingly sophisticated scams.

8.   Others are stolen by professional thieves who strip off the nameplates and other store IDs and resell them.

9.   The artifacts, many of which have real historical significance, have been targeted by professional thieves or misplaced over decades, officials said.