A Clearlake man was arrested on suspicion of rape, oral copulation and lascivious conduct with an underage girl.
Clearlake police arrested Samuel Rangel, 24, at his Clearlake home at about 2:30 on Friday afternoon.
The investigation began in January and detectives determined that the offenses had taken place over an extended period of time, Sergeant Nick Bennett of the Clearlake Police Dept. said in a news release.
Police did not immediately respond to a call and email seeking information on the girl's age, the circumstances of the offenses and her relationship to Rangel.
Rangel was booked into Lake County Jail, and bail has been set at $275,000.