State police are probing a fatal accident Wednesday in Greenburgh.Officials say the accident took place at around 4 a.m. at the 2-87 entrance ramp on the Sprain Brook Parkway. According to officials, two women in their early 20s were in a Nissan Pathfinder that crashed on the entrance ramp.One of the women was ejected from the car and killed. Police say the other woman was injured, but is alert and talking. Officials say they do not yet know who was driving the vehicle.Investigators are still trying to determine what may have caused the accident and say it is not known if speed, drugs or alcohol were involved.