San Francisco, CA – San Francisco District Attorney Brooke Jenkins announced today that her office secured a conviction of Ralph Mueller (67), after a trial by jury for assaulting a man following a traffic incident on 13th Street and Van Ness Avenue. Mr. Mueller was convicted of assault with a deadly weapon, not a firearm (PC 245(a)(1)) with an allegation that he personally used a dangerous and deadly weapon in the commission of the assault found true (PC 969f), and one count of hit and run (VC 20002(a)).

“I would like to thank the jury for their service on this trial,” said District Attorney Brooke Jenkins. “The jury’s verdict holds Mr. Mueller accountable and sends a message that this behavior will not be tolerated.”

According to the testimony and evidence presented at trial, on the morning of November 22, 2025, Mr. Mueller crashed into a vehicle driven by the victim near 13th Street and Van Ness Avenue. Mr. Mueller left the scene of the accident and continued driving, while the victim followed behind him. The cars came to a stop at a red light. An interaction ensued where Mr. Mueller pulled out a pocketknife and swung it at the victim, cutting the victim’s chin.

The case against Mr. Mueller was successfully prosecuted by Assistant District Attorney Warren Henderson with assistance from paralegals Daniel La and Andres Ruano-Hernandez and Victim Advocate Cody Martinez. Prosecutors were able to develop a strong case against Mr. Mueller based on the work of the San Francisco Police Department.

“I would like to thank the jury for their thoughtful consideration of the evidence and holding Mr. Mueller accountable,” Assistant District Attorney Warren Hendeson. “I would like to thank the victims for availing themselves to this process. It’s incredibly difficult to relive traumatic experiences on the witness stand. They showed courage and resilience to obtain justice in this case.”

Mr. Mueller is currently out of custody. Sentencing is scheduled for June 25, 2026.

Court Number: 25025623

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