DELRAN, N.J. » A man slit his wife’s throat while she was driving, causing a crash, and then fled to a diner where he was found partially dressed and covered in blood, authorities said today.

Delran police responded Thursday night when a car collided with other vehicles. Officers reported finding a knife in the vehicle and 54-year-old Cynthia Fortune on the ground with lacerations on her neck, the Burlington County prosecutor said. She later died.

Her husband, Quentin Fortune, 37, of Somerdale, was at a nearby diner, dressed only in a T-shirt, boxer-briefs and sneakers and covered in what appeared to be blood, prosecutors said. They said he didn’t appear to have any cuts on his own body.

“They were driving down Route 130 when their vehicle ran into two other cars alongside them,” prosecutor Robert Bernardi said. “We think a struggle occurred inside the car and that’s when the murder occurred.”

Bernardi said an autopsy found that Cynthia Fortune died from two stab wounds to the neck.

He said Fortune is in the Burlington County jail on $300,000 bail and will likely make his initial court appearance Monday. He didn’t have an attorney listed to comment on his behalf.

Bernardi said investigators are hoping to speak to the driver of a car that Quentin Fortune attempted to get into after the accident. He said surveillance footage shows Fortune going up to the car, but that it took off without letting him in.