1.   But the chance arrest of Ressam last Tuesday has altered that perception, he said.

2.   Had it not been for a computer loaded with fingerprints and chance arrests, the three New York suspects might still be free.

3.   Investigators suffered a setback Wednesday in their pursuit of the Oklahoma City bombers which despite official claims of confidence has resulted in only one chance arrest.

4.   Investigators suffered a setback Wednesday in their pursuit of the Oklahoma City bombers which, despite official claims of confidence, has resulted in only one chance arrest.