Monday marked the 1-year anniversary of the fatal Metro-North train derailment in the Bronx.

The train, bound for Grand Central Station, came flying off the tracks near the Spuyten Duyvil station on the morning of Dec. 1, 2013. The accident killed four people and left more than 60 injured.

An investigation later revealed the driver, William Rockefeller, suffered from sleep apnea and nodded off while driving the train. Reports say he remains suspended without pay and has been named in several lawsuits against Metro-North.

The accident prompted Metro-North to step up safety, including screening employees for sleep apnea. Cameras are also being added to trains to monitor engineers.