Sheriff Pat Withrow told the San Joaquin County Board of Supervisors the investigation into the Nov. 29 mass shooting is ongoing and cautioned that establishing a prosecutable case will take time. “So far, we realize that there has been, at least over 50 shots were fired at this birthday party,” Withrow said, adding investigators recovered “over 50 casings” and that federal partners at the ATF are processing evidence.

District Attorney Ron Freitas gave a parallel statement describing the human toll: “Seventeen individuals shot, four lives lost,” Freitas said, urging anyone with information to contact the Sheriff’s Office or the DA’s office and noting a reward fund managed through Scribe Stoppers. He also encouraged donations to victim‑support charities and pledged to prosecute if and when evidence supports charges.

Both officials emphasized interagency coordination. Withrow described multi‑jurisdictional and federal assistance and warned that public descriptions of suspects have been limited: those reported to law enforcement were “wearing all dark clothing and had some type of face coverings.” He said investigators have received more than 50 tips on tip lines and appealed for continued, anonymous information from the public.

The board did not engage in a question‑and‑answer exchange with Withrow or Freitas during the update. Several members of the public who later addressed the board during public comment urged the county to invest more in prevention and community‑based intervention programs. Nikki Smith, president of Cleveland School Remembers, said the tragedy underscores the need for funding and policy changes to prevent child deaths from gun violence. Another speaker, Chris Elias, urged improved coordination among county, city and school partners to expand prevention and intervention services.

The briefing was presented as an informational update; the sheriff and district attorney asked residents to remain patient while investigators work through evidence and interviews and promised to provide verified information when available.