Authorities say they have found the cell phone of a missing California girl who disappeared early Friday on her way to school.
The cell phone of 15-year-old Sierra Lamar was discovered in a field a few miles from her home in Morgan Hill, Calif., about 25 miles south of San Jose in Santa Clara County, KTVU-TV reported. Police found the phone Sunday by tracking its electronic ping.
The girl was last seen leaving for school Friday morning. Police dogs searching for the girl lost her scent at the driveway of her home, according to the station.
The teenager usually walked from her home to a nearby bus stop, but a bus driver reportedly said he saw no sign of her.
Investigators scoured creek beds and fields over the weekend for any clues into Lamar's disappearance.
"We're hoping she's alive and that's the most important thing right now," the girl's mother, Marlene Lamar, told KTVU.
Sierra Lamar is described as 5-feet, 2 inches tall, with brown hair. She was last seen carrying a pink and black purse.
The teen's sister, Danielle Lamar, said she does not believe her sister ran away.
"She's always in contact with family and friends. She wouldn't leave everyone out of the loop," Danielle Lamar said.
Anyone with information on the teenager's whereabouts is being urged to call the Santa Clara County Sheriff's Department at (408) 299-2311.