CLEARLAKE (CBS SF) — The search for a 9-year-old autistic girl from San Francisco missing in Lake County continued until dark Tuesday.

More 100 people are searching for Mikaela Renee Lynch who was last seen in the backyard of her family’s vacation home at 15197 Harbor Drive in Clearlake around 1:30 p.m. Sunday, Clearlake Police Sgt. Nick Bennett said.

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A brief video taken from a residence shows the girl without clothes and shoes running north on Harbor Drive, Bennett said, and the girl’s family said she has a habit of removing her clothing.

Due to her mental state, age and circumstances, she is believed to be an at-risk juvenile, police said.

Her disappearance is not considered an abduction, and police have not received any tips about her, Bennett said.

The one-mile search area where the girl was last seen includes a creek near the house, marshlands, backyards and empty homes, Bennett said.

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Three boats from the Sonoma County Sheriff’s Office’s marine unit are participating in the search at the south end of Clear Lake, Sonoma County sheriff’s Sgt. Ed Hoener said.

Homes in the area are located close to the water.

Ten members of the sheriff’s office’s search and rescue team also are involved in the hunt for the girl, Hoener said.

Mikaela is white, 4-feet tall, 70 pounds and has brown hair and blue eyes. She is autistic and unable to speak, police said.

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