4 men were arrested during a series of sex offender compliance checks on Halloween Day. Anderson’s Problem Oriented Policing Unit, Shasta County Deputies, D.A. Investigators, and probation officers visited the homes of 21 registered sex offenders. The 4 arrests include 79-year-old Ralph Messina for failing to register as a sex offender, 43-year-old Christopher Harvin, for failing to cooperate with the search, 50-year-old Guy Shoop for being a felon with guns and ammo, and a man who is not a sex offender was arrested on a warrant.