Good to be with you. Im annemarie green. Well, federal transportation officials have zbruchbt their investigation into the deadly crash of a new york city commuter train. At least four people were kanld 60 others injured. The metro north train was on its way from poughkeepsie to manhattan. It jumped the track as it rounded the curve. Theyre looking into speed, possible mechanical issues and human error. Marlie hall is at the crash site. Marlie, good morning. Reporter good morning, annemarie. Federal investigators continue to pore over this crash site this morning trying to determine what led to that deadly train derailment. Investigators are trying to determine what caused a commuter train to jump the tracks, killing four and injuring more than 60. The investigation appears to center around how fast the train was moving as it reached a curve in the bronx just north of manhattan. We have not spoken to the conductor. We anticipate interviewing the train crews in the next day or two. Repo