On August 3, 2026, at approximately 8:55 PM, San José Police Department Patrol Officers responded to an assault with a deadly weapon that occurred at a business located in the 1100 block of South King Road. The preliminary investigation revealed that an adult male victim and an adult female victim were with their young daughter inside a fast food restaurant when an adult female suspect physically assaulted the female victim following an altercation. The adult male victim attempted to intervene at which point an adult male suspect began to assault the male victim. The male suspect then brandished a firearm at the adult male victim and threatened to shoot him. The suspects fled the scene prior to police arrival.
SJPD Assaults Unit Detectives began an investigation and after utilizing Automated License Plate Reader (ALPR) data, identified the suspect vehicle, and subsequently the primary suspects: Alejandro Valencia and Krystelle Tieu Acosta. Detectives obtained arrest warrants for both suspects and a search warrant for their associated residence.
On October 7, 2026, with the assistance of the SJPD Covert Response Unit, Suspects Valencia and Tieu Acosta were located and arrested in Union City. When Detectives served the search warrant, they located two firearms and evidence of the crime.
Both suspects were subsequently booked into Santa Clara County Main Jail for assault with a deadly weapon, felony battery, and criminal threats.
Anyone with information about this case or similar cases is asked to contact Detective Garcia #4925 of the San José Police Department Assaults Unit via email: 4925@sanjoseca.gov or 408-277-4161.
Submit crime tips and remain anonymous by using the P3TIPS mobile app, calling the tip line at (408) 947-STOP, or on the Silicon Valley Crime Stoppers website. If the information you submit leads to an arrest, you are eligible for a cash reward from the Silicon Valley Crime Stoppers Program.