ALPINE, Texas  -Authorities say the girl who shot and injured a female student at a West Texas high school was 14-year-old freshman.

Brewster County Sheriff Ronny Dodson said during a news conference Thursday afternoon that a motive behind the shooting at Alpine High School remains unclear. Dodson says the 14-year-old later died of an apparent self-inflicted gunshot wound. Her name hasn't being released.

Dodson says the victim was hospitalized in stable condition. The sheriff said her injuries aren't life threatening.

The sheriff said the 14-year-old girl and her family moved to Alpine about six months ago.

The shooting was reported just before 9 a.m. Alpine is about 220 miles southeast of El Paso.