An investigation shows the train engineer who was at the controls of a fatal commuter train crash in New York in December suffered from "severe" sleep apnea.
Updated: Tuesday, April 8 2014, 08:17 AM EDT
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NEW YORK (NEWSCHANNEL 3) - An investigation shows the engineer who was at the controls of a fatal commuter train crash in New York in December suffered from "severe" sleep apnea.
A report from the National Transportation Safety Board says William Rockefeller didn't know he suffered from the condition.
The report also says he took an antihistamine the day of the crash because of a respiratory infection.
The train was speeding when it hit a curve and jumped the tracks, killing four people.
An official cause of the crash has yet to be determined.
