Vacaville police and other law enforcement members arrested four registered sex offenders during a compliance sweep Wednesday.
Vacaville police Sgt. Charlie Spruill said six investigative teams visited 50 locations and conducted 28 compliance checks between 2 p.m. and 10 p.m. to determine if the registered offenders were complying with the requirements of their registration, parole or probation conditions.
Paul Bock, 21, was arrested for being in violation of his sex offender probation terms and Aldaberto Hernandez, 55, was arrested for violating his sex offender parole conditions, Spruill said. The specific violation is unknown, Spruill said.
Daryl Robertson, 18, was arrested for possession of pornography, possession of a weapon and violating his sex offender probation, and Mohammed Ghulan, 82, was arrested for failing to register as a sex offender, Spruill said.
Spruill said police conduct between five and 15 random compliance checks each month and four to six larger compliance checks with other law enforcement agencies each year.
Assisting Vacaville police Wednesday were deputies from the Solano County Sheriff's Office, probation officers from the county's probation department, parole agents from the California Department of Corrections and
Rehabilitation and officers and investigators from the Northern California Computer Crimes Task Force.
The computer crimes task force conducted 14 computer previews, Spruill said.