(AP) - An engineer who fell asleep at the controls of a Metro-North train and caused a derailment that killed four people in New York City has sued the railroad.

William Rockefeller says in a $10 million lawsuit Thursday in Manhattan federal court that Metro-North was negligent and careless by failing to provide him with a safe workplace. He says the railroad also failed to install automatic brakes.

In addition to the deaths, more than 70 people were injured in the Dec. 1, 2013, derailment.

The accident occurred in the Bronx as the commuter train went around a curve at about 82 mph. The speed limit on the turn was 30 mph.

Investigators said Rockefeller suffered from an undiagnosed sleep disorder.

Metro-North did not immediately comment.

(Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

12/1/2016 2:50:07 PM (GMT -5:00)