Police are interviewing registered sex offenders in the area near where a 15-year-old California girl was last seen as she left for school early Friday.

Authorities are questioning the sex crimes offenders who live close to where Sierra LaMar, of Morgan Hill, Calif., disappeared, Fox affiliate KTVU-reported. There are 276 registered sex offenders in the area.

The girl's father, Steve LaMar, who lives some 40 miles away in Fremont, is a registered sex crimes offender but is not considered a suspect in the case, according to the station.

The teen was last seen leaving for school at around 7:15 a.m. Friday morning. Police dogs searching for the girl lost her scent at the driveway of her home, authorities said.

The teenager usually walked from her home to a nearby bus stop, but a bus driver reportedly said he saw no sign of her. She was reported missing by her family Friday evening when they learned she had not attended school.