ROSWELL, N.M. — Federal safety officials canceled but plans to reschedule a meeting to determine the probable cause of a fatal 2015 collision involving two freight trains in New Mexico and issue safety recommendations aimed at preventing similar wrecks.

The National Transportation Safety Board canceled the meeting scheduled Tuesday in Washington because of a fatal helicopter crash Monday in New York City’s East River.

A Southwestern Railroad engineer was killed and a second crew member was seriously was injured when their train struck a train parked on a siding 10 miles (16 kilometers) southeast of Roswell on April 28, 2015.

A preliminary report said the moving train went through a misaligned switch and that the parked train’s crew went off duty about 20 minutes before the wreck and weren’t present when it happened.