Jiang Yue's cousin walking out of the court. (Photo provided by Yang Wentian)

American woman Holly Davis was sentenced to 25 years in prison on Friday in a court in the western US state of Arizona for the murder of a Chinese student after a rear-end collision in 2016.

A judge in Maricopa County Superior Court sentenced Davis to 25 years with no possibility of early release for second-degree murder in the January 2016 fatal shooting of Jiang Yue, a 19-year-old Chinese exchange student attending Arizona State University.

Jiang was driving her car when she was rear-ended by Davis in the Arizona city of Tempe. Davis then got out of her Volkswagen Passat, walked up to the door of Jiang's car and opened fire.

The shooting killed Jiang, who was in the driver's seat, and injured six others after Jiang's car veered out of control into the intersection and struck an oncoming car. Davis fled the scene and was later taken into custody by police.

Davis has been in jail since her custody.