The British police asked ABC News on Tuesday to withhold a report showing images of what were said to be unexploded bombs found in a car used by the July 7 bombers and of the inside of a subway train mangled in the attacks, a network official said yesterday. But on its "World News Tonight" program on Tuesday, ABC went ahead with the report, which said the attacks might have been part of a wider plot, said the official, Jon Banner, executive producer of "World News Tonight." He said the account was cut from the program when it was broadcast...