YONKERS, N.Y. (AP) — The engineer in a commuter-train derailment that killed four people over the weekend caught himself nodding at the controls just before the wreck, a union official said Tuesday.
William Rockefeller ‘‘caught himself, but he caught himself too late,’’ said Anthony Bottalico, leader of the rail employees union, relating what he said Rockefeller told him.
During a late-afternoon news conference, federal investigators said they were still talking to Rockefeller, and they would not comment on his level of alertness around the time of the Sunday morning wreck in the Bronx.
Rockefeller’s lawyer did not immediately return calls. Full story for BostonGlobe.com subscribers.