A fractured segment of track has been found on the rail line of a Metro-North passenger train from New York that derailed in Connecticut and struck another commuter train, injuring more than 70 people, investigators said on Saturday. Authorities have ruled out foul play in Friday's collision, which occurred during the evening rush hour between the towns of Bridgeport and Fairfield, about 50 miles northeast of New York City. Further examination is necessary to determine if track damage found at the site of the accident was a cause or effect of the train wreck, but that stretch of rail line had undergone repair work during the past month, officials said. "We don't yet know whether the fractured train track caused the accident, or was caused by it," Earl Weener, a board member for the U.S. National Transportation Safety Board, told reporters at a news conference in Bridgeport. "We do know that the back end of the eastbound train that derailed went over that