A woman died in a crash that brought I-20 East in Cobb County to a halt early Thursday.

The collision happened around 3:30 a.m. just before Riverside Parkway, or exit 46, according to the Georgia Department of Transportation. All lanes remained closed until about 7 a.m.

Cobb police said Carolina Stephanie Figueroa-Mora, 29, of Villa Rica, was driving a 2008 Pontiac G6 eastbound at the same time that a Freightliner Cascadia, pulling a 53-foot trailer, was going in the same direction. At some point, the Pontiac “began to rotate counterclockwise” and veered toward the median wall, striking it with the front of the vehicle.

Police did not say why the vehicle started rotating, but after the initial impact with the wall, it continued rotating, hit the wall again and redirected across the eastbound lanes.

That is when the front of the Freightliner hit the back of the Pontiac, causing it to tumble and ultimately stop on the shoulder, officials said.

At that point, the tractor-trailer became jackknifed on the shoulder.

“Tragically, (Figueroa-Mora) was pronounced deceased at the scene by the Cobb County Medical Examiner’s Office,” police said.

The driver of the freightliner and a passenger were not injured.

The crash remains under investigation, and officials have not said if anyone will face charges.

Anyone with information is asked to contact Cobb police at 770-499-3987.