State police are probing a fatal crash Sunday on the New Jersey Turnpike.

Troopers responded to a crash around 3:28 a.m. on the Turnpike south on the inner roadway milepost 71.1 in Cranbury Township.

According to a preliminary investigation, a BMW and Mercedes passenger car were traveling on the Turnpike south inner roadway in the area of milepost 71.1. The Mercedes struck the rear of the BMW. The BMW then traveled off the roadway to the right and struck a guardrail. The Mercedes overturned and struck a guardrail.

The driver of the Mercedes was ejected and sustained fatal injuries. The passenger of the Mercedes sustained serious injuries. The driver of the BMW sustained minor injuries.

The victim is a 29-year-old female from Philadelphia. Identification is being withheld pending notification.

The crash remains under investigation and there is no additional information available at the moment.