Sleep apnea eyed as possible cause of fatal NJ train crash

Officials say the engineer of a commuter train that slammed into a New Jersey station in September suffered from undiagnosed sleep apnea.
The train sped into the Hoboken station at double the 10 mph speed limit, killing a young mother on the platform.
Officials say investigators are looking at sleep apnea as a potential cause of the crash.
They say the engineer told investigators he had no memory of the crash and remembered waking up on the floor.