CLEARLAKE (CBS SF) – Search teams from Sonoma, Napa and Marin counties were trying Monday to find a 9-year-old autistic girl who was last seen in her yard in Clearlake in Lake County on Sunday afternoon.

Mikaela Renee Lynch was last seen in Highlands Harbor. She is 4 feet tall, 70 pounds and has brown hair and blue eyes, the Lake County Sheriff’s Office said.

READ MORE: COVID: UCSF Researchers Examine Impact Of Coronavirus On Young Brains After 3 Teens Develop Psychosis

The girl’s father, Bari Lynch, contacted Clearlake police around 1:30 p.m. Sunday to report her missing from the family’s home at 15197 Harbor Drive.

READ MORE: Desperately-Needed Rainfall from 'Bomb Cyclone' Gives Hope For North Bay Drought Recovery

Police said the girl is unable to speak and is considered at risk.

MORE NEWS: Atmospheric River: North Bay Water Officials Wait & See On Easing Restrictions After Major Storm

(Copyright 2013 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)