The River LINE operator who died in a crash Monday was a 41-year-old single mother of three, according to an attorney preparing to sue NJ Transit on her family's behalf. And the cause of the fatal accident — a fallen tree on the tracks — was a known hazard in the crash area, the lawyer says.

MANSFIELD TWP., New Jersey (WPVI) -- River Line service on New Jersey Transit, between the Florence and Trenton stations, is still suspended after Monday's deadly train crash. The train slammed into a tree in Mansfield Township, Burlington County, killing the operator and injuring 23 passengers

A New Jersey Transit train operator died Monday morning after a River Line train struck a tree that had fallen onto the tracks in Mansfield Township, Burlington County.According to New Jersey Transit,