The Solano County Sheriff’s Department, with support from the district attorney and the Vallejo Fire Department, executed a search warrant in the city Thursday morning that led to the arrest of a suspect in connection with an arson fire at the Vallejo courthouse in June, authorities said. Vallejo resident Octavia Walton, 40, was arrested Thursday when authorities executed a search warrant in the 2700 block of Webb Street, police said. A second suspect, 31-year-old Vallejo resident Benjamin Stickel, was also arrested in connection to the arson. Stickel was already in custody at the Solano County Jail on unrelated charges when he was arrested, police said. The three-alarm June 30 fire at the Solano Justice Center caused extensive damage to the court’s criminal division offices, burning files, furniture, computers, and wiring in addition to causing smoke damage in the courtrooms. At the time of the arson, Vallejo Fire Department spokesman Bill Tweedy gave an initial damage estimate as being between $100,000 and $300,000. The sheriff’s office has set bail at $106,00 for both Walton and Stickel.