The operator of a Chicago train which derailed on Monday, injuring 32 people, has said she fell asleep while on duty, according to federal officials.
http://www.bbc.co.uk/news/world-us-canada-26755907
The unnamed woman, employed as an operator for two months, reportedly admitted it was not the first time she had dozed off on the job.
The speeding metro train jumped its tracks at O'Hare International Airport and hurtled up an escalator.