1.   It was unclear whether a broken wheel caused the track damage or vice-versa.

2.   There seemed to be a consensus among railway experts that the most likely cause was a broken wheel or some other mechanical defect.

3.   We were watching a true team leader at work, going all-out on a broken wheel.

4.   Papis made it back to the pits, but left the race because of a broken left front wheel.

5.   A spokeswoman for the federal transport ministry told The Associated Press that a broken wheel on the first car behind the lead locomotive may have been a factor.

6.   Authorities believe a broken wheel caused the wreck in the northern village of Eschede, although they have yet to determine what caused it to break.

7.   German authorities believe a broken wheel caused the accident.

8.   I was lucky because I reached the finish line with a broken wheel, and happy for this result in front of a fantastic crowd.

9.   In a report released last month, the cause of that crash was found to be a broken wheel.

10.   Investigators have said that crash was caused by a broken wheel.