A Metro employee was struck and killed by a train Sunday while working on the track just outside the Dupont Circle Metro Station, the second subway worker to die while on the job in less than a year.

The employee was hit at 10:16 a.m. in the tunnel about 50 yards from the station entrance by a Red Line train headed to Glenmont, said Candace Smith, Metro spokeswoman. The worker, whose body was found under the last car, was performing routine maintenance on the interlocking system, the equipment that switches trains from one track to another.