UC Berkeley police said the case began as an attempted assault report before investigators reclassified it as a completed sexual assault.
BERKELEY, CA — UC Berkeley police arrested a 27-year-old Vallejo man Saturday after an alleged sexual assault involving a child was reported overnight inside a campus residence hall during a summer camp program, authorities said.
The arrest has drawn attention to an overnight youth program being held on university grounds, though officials said the camp was not operated by UC Berkeley. Police identified the suspect as Quaylin Wesley and said detectives were still investigating the case. Authorities had not released the name of the camp, the residence hall or detailed information about the child as of Monday.
Police said the University of California Police Department was notified between about 1:15 a.m. and 2 a.m. Saturday about what was first reported as an attempted sexual assault inside a UC Berkeley residence hall. Officers provided safety and support services to those involved while detectives began pursuing leads. Later Saturday, police said the investigation showed the incident was a completed sexual assault, not an attempt. A campus alert said Wesley had been arrested in connection with the case. Officials said the alleged assault happened during an overnight summer camp program being held on campus.
Booking records cited by local news outlets showed Wesley was arrested on suspicion of sodomy of a minor, lewd and lascivious conduct with a child under 14 and burglary. He was booked at Santa Rita Jail and was being held on $425,000 bail. Police said Wesley is from Vallejo. Authorities have not said whether formal charges had been filed by prosecutors. An arraignment was expected Wednesday. UC Berkeley police said the investigation remained active and that detectives were reviewing information tied to the case and any possible similar incidents.
A university spokesperson said the camp involved was not run by UC Berkeley and said Wesley was not currently affiliated with the university. The university confirmed he graduated from UC Berkeley in 2021 with a bachelor’s degree. Officials did not identify the organization that operated the camp. They also did not say how many campers were staying in the residence hall, how the camp arranged housing on campus or what supervision rules were in place for the overnight program. Those details remained unknown Monday as the investigation continued.
The case has raised questions on campus and in Berkeley about outside youth programs that use university facilities during summer months. UC Berkeley residence halls often host students, visitors and program participants outside the regular academic year, including youth camps and academic programs. In this case, police released only limited information, citing the active investigation and the age of the child. Authorities said the child received immediate support services. No additional injuries, arrests or suspects had been announced.
Community members told ABC7 Bay Area the case was upsetting because it involved a child in a place families may view as structured and supervised. “Especially for a young kid, that’s going to be traumatizing for them,” UC employee Francis Wang said. Berkeley resident Bowen Giang said the allegation was frightening for parents and others connected to youth programs. Police have not released a public statement from the child’s family. The camp operator also had not been publicly identified by officials as of Monday.
Wesley’s next known court date was expected Wednesday, when he could appear for arraignment if prosecutors file charges. UC Berkeley police said detectives were continuing to investigate what happened inside the residence hall and whether there are other related reports. The case stood Monday as an active criminal investigation, with Wesley in custody and key details about the camp still undisclosed.
Author note: Last updated June 15, 2026.