Karlie Lain Guse, 16, was last seen in Chalfant, Calif., on Saturday morning.

Mono County Sheriff’s Office

Authorities are seeking help finding a 16-year-old Mono County girl who has been missing since Saturday morning.

Karlie Lain Guse was last seen on Ponderosa Street near White Mountain Estate Road in Chalfant, Calif.

Her name was added to the National Center for Missing and Exploited Children on Tuesday.

“Despite an exhaustive search of the surrounding area and neighboring town of Bishop, Karlie still has not been located,” Mono Sheriff Ingrid Braun said. “Her family and friends are desperate to find her.”

The Mono County Sheriff’s Office has used helicopters, scent dogs, “search and rescue teams and off-road vehicles, to thoroughly search the surrounding neighborhood and high-desert terrain,” Braun said. “Interviews of family and friends have been conducted, as well as a forensic investigation into her social media and electronic devices.”

She is described as 5-feet, 7-inches tall weighing 110 pounds with dark blonde hair and blue eyes. She is possibly wearing a white T-shirt and gray sweatpants.

Braun said Karlie may be disoriented and does not have any personal belongings or cell phone with her.

Anyone who has seen Karlie or has any information regarding her whereabouts, should call Mono County Sheriff’s Office Dispatch at 760-932-7549, option 7.