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Alcohol ruled out as cause of coach crash

16 March 2012 Last updated at 16:45 GMT

Swiss authorities investigating the coach crash which killed 22 children and six adults say early results rule out alcohol, a heart attack or other illness on the part of the driver.

Swiss prosecutor Olivier Elsig said early results from a post-mortem examination of the driver showed no trace of alcohol and also appeared to rule out a heart attack or other illness.