Police in Hayward are trying to find an 8-year-old girl who may be with a parent or guardian, but hasn't been seen by other relatives since December.
Sophia Mason was reported missing on Tuesday, police said.
The girl may be in the care of a parent or guardian, but other family members haven't had contact with them since December, according to police.
Sophia is known to stay at different locations between Hayward and Southern California.
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Hayward police are asking anyone with information about Sophia's whereabouts to contact the department at 510-293-7000 so a welfare check can be done.
The case number for the investigation is 2022-013287.