A 70-year-old Fairfield man was arrested Tuesday after a multi-agency team served a search warrant at a home tied to an investigation into alleged possession and distribution of child sexual abuse material, authorities said. The Solano County Sheriff's Office said it arrested 70-year-old Mark Reilly and booked him into the county jail. Investigators also took 28-year-old Joseph Young into custody at the same address on separate narcotics-for-sale allegations.
How the Sweep Unfolded
Detectives executed the warrant in the 3000 block of Roadrunner Drive on Tuesday, in an operation involving the Solano County Sheriff's Office Investigations Division, the Sheriff's Enforcement Team (SET) and detectives from the Vacaville, Benicia and Dixon police departments, The Reporter noted. Officers searched the residence and seized items that investigators say are now undergoing forensic examination as part of the ongoing probe.
Charges, Bail and Court Dates
Reilly was booked on charges related to possession and distribution of child sexual abuse material and is being held on $100,000 bail, according to the Solano County Sheriff's Office. Young was arrested on suspicion of possessing fentanyl for sale and was booked, then later released after posting $35,000 bail.
Court listings show Young is scheduled for a preliminary hearing at 10 AM on July 2 and a readiness conference on July 1 in Judge Janice Williams' courtroom, according to the Solano County Superior Court.
What Authorities Say
The sheriff's office said that "protecting children from sexual exploitation remains one of its highest priorities" and urged anyone with information to contact investigators. The department listed two phone numbers for tips: the Investigations Division at (707) 784-7050 and an anonymous tip line at (707) 784-1963.
Why It Matters
Local arrests like this are unfolding against a backdrop of intensified federal and state crackdowns on networks that distribute child sexual abuse material. The FBI’s recent Operation Iron Pursuit, detailed by the FBI, reported more than 350 arrests and the location of over 200 child victims. That national push underscores why local task forces and regional partners routinely coordinate on digital-forensic work that can stretch across multiple jurisdictions.
What Comes Next
Reilly's case remains under investigation, and prosecutors will decide whether to file formal charges once detectives complete their forensic review. Neighbors with information or surveillance footage are asked to call the Solano County Sheriff's Office Investigations Division at (707) 784-7050 or the anonymous tip line at (707) 784-1963.
