(NEWSER) – A sad twist in yesterday's horrific train derailmentin the Bronx: One of the four people killed when the train came off the rails at a riverside curve was lighting and sound expert Jim Lovell, who was on his way to help set up the famous Rockefeller Christmas tree for the holidays. The National Transportation Safety Board has begun its investigation of the incident, which injured 63 people, 11 of them critically.

  • Lovell also worked as a sound technician on the Today show, where the executive producer says he is mourning his colleague, the Wall Street Journal reports. Friends describe the 58-year-old as a free spirit, a keen historian, and a devoted father of four who had survived both cancer and open heart surgery in recent years.

  • The other victims have been named as Donna Smith, a 54-year-old paralegal heading to the city with her sister to see Handel's "Messiah," Kisook Ahn, 35, a registered nurse on her way home from a night shift, and James Ferrari, 59, the New York Times reports.

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Photo Credit: Getty Images/Christopher Gregory