Coimbatore, July 02: The departure of Coimbatore-Nagercoil passenger was delayed by more than one hour, as one of the coaches derailed, during the shunting process. When the workers were engaged in maintenance of the coaches, a coach came off the track, as buffer of two coaches entangled each other in the early hours at the railway station, railway sources said. After restoring the coach on the track, the train left around 8.30 am to Nagercoil, they said. Bureau Report