December 4th, 2013
12:31 PM ET

Union Rep.: Engineer Was 'Nodding Off'

The engineer who was involved in Sunday's New York train derailment apparently "was nodding off and caught himself too late" before the accident that killed four people and injured 67 others, a union representative who has been meeting with the man told CNN on Tuesday.

Anthony Bottalico, the union representative, said engineer William Rockefeller Jr. recognizes his responsibility in the incident.

"I think most people are leaning towards human error," Bottalico said.