An autopsy Monday shows that a woman died early Sunday from stab wounds and not from car crash injuries as authorities first thought, leading the parish coroner to declare her death a homicide.

Tameka Jacobs, 36, had been stabbed in the groin and was being driven to a hospital when she was involved in the wreck on North Acadian Thruway.

But Dr. Beau Clark, East Baton Rouge Parish coroner, said none of the injuries she received in the crash would have caused her death.

He said Jacobs, a passenger in the vehicle, was dead by the time emergency personnel arrived on the scene, but he was unsure whether she died before or after the crash.

Jacobs had been stabbed, apparently during a fight, in the 4100 block of Levera Street and was being driven to a hospital for her injuries, said Baton Rouge police spokesman Cpl. L’Jean McKneely.

He had no further information on the severity of the stabbing.

A 37-year-old, who was not identified, was driving a 1996 Ford Explorer with Jacobs in the passenger seat when it went off the road and flipped about 4:40 a.m., McKneely said. Jacobs, who was not wearing a seat belt, was thrown from the SUV and landed underneath the vehicle.

The driver was taken to a hospital for nonlife-threatening injuries, McKneely said.

Family members of Jacobs said the driver was a woman and a longtime friend of Jacobs, but they did not give her name. They had no further information on the stabbing than what has been reported by police.

“I have no words,” said her oldest son, Keijuan Jacobs, 22.

“All we know is she was stabbed. My mom died from a stabbing, not the car crash.”

Police suspect alcohol and drugs to be factors in the wreck, McKneely said, but Jacobs’ son, and father, Robert Mitchell, dispute that played a part in Jacobs’ death.

“That’s irrelevant,” Keijuan said.

“Just because she’s a black woman doesn’t mean she was on drugs or drinking,” Mitchell said.

Baton Rouge police spokesman Cpl. Don Coppola said both the stabbing and the crash are still being investigated.

Follow Annie Ourso on Twitter, @AnnieOurso.