Three other people, including an 11-year-old child, were wounded during the shooting outside a Northern California high school.
FAIRFIELD, Calif. — An 18-year-old was killed and three other people were wounded Wednesday evening when gunfire erupted outside a high school graduation ceremony in Fairfield, sending hundreds of families, graduates and guests running for safety as a celebration came to an abrupt and violent end.
The shooting occurred shortly after the conclusion of a commencement ceremony for Sem Yeto High School, held at Fairfield High School’s Schafer Stadium. Authorities said the attack happened in the parking lot as graduates and relatives gathered for photographs and farewells. Investigators have not announced any arrests, and the motive remains unclear. The incident has shaken the community and prompted a large-scale investigation involving numerous witnesses.
Police said officers responded around 7:15 p.m. after reports of multiple shots fired near the stadium. By the time first responders arrived, an 18-year-old victim had suffered fatal injuries and was pronounced dead at the scene. Three additional victims — ages 11, 20 and 25 — were transported to hospitals for treatment. Officials have not publicly released their medical conditions. Authorities also have not confirmed whether the deceased 18-year-old was a graduating student. Witnesses described a scene of panic as families who had just finished celebrating sprinted away from the sound of gunfire. Some attendees dropped belongings and sought cover behind vehicles while others attempted to locate loved ones amid the confusion. Police quickly secured the area and began interviewing witnesses.
Investigators said approximately 1,000 people attended the graduation ceremony, creating a large pool of potential witnesses. Detectives spent Thursday identifying and interviewing people who may have seen the shooting unfold. Law enforcement officials indicated that hundreds of attendees could have witnessed some portion of the incident. Early accounts from people at the scene suggested that the gunfire began while families were taking photographs in the parking lot following the ceremony. Nearby residents reported hearing rapid bursts of gunfire followed by screams. Amanda Prieto, who lives near the campus, said she heard what sounded like rapid fire and looked toward the school grounds. She described seeing frightened people running through the parking lot moments later. Police have not released information about the suspected shooter or shooters, and investigators have not disclosed whether the victims were specifically targeted. Officials said there is no indication of an ongoing threat to the broader community.
The shooting transformed what had been a milestone occasion into a crime scene. Sem Yeto High School serves students within the Fairfield-Suisun Unified School District and holds commencement ceremonies attended by graduates, relatives and community members. Such events typically draw large crowds, making the violence particularly shocking for attendees. Images from the scene showed vehicles damaged by gunfire, including at least one vehicle decorated with graduation balloons. Community leaders expressed grief over the circumstances, noting that the attack occurred at a moment intended to celebrate academic achievement and new beginnings. Residents and officials alike voiced concern about the emotional impact on students, families and witnesses who experienced the chaos firsthand. The incident also renewed conversations about public safety at large community gatherings and school-related events.
As the investigation continues, detectives are reviewing witness statements, examining physical evidence and pursuing leads regarding the person responsible. Authorities have not announced charges or identified any suspects publicly. Police said investigators are working to determine the sequence of events that led to the shooting and whether multiple individuals may have been involved. Officials have urged witnesses who captured photographs or video during the ceremony and its aftermath to cooperate with investigators. The Fairfield Police Department has stated that additional information will be released as evidence is verified. Prosecutors cannot evaluate potential criminal charges until investigators identify a suspect and complete key portions of the case. Law enforcement officials have emphasized that the investigation remains active and ongoing.
The tragedy prompted an outpouring of grief across Fairfield. Mayor Catherine Moy said her heart was breaking for the students and families affected by the violence. In public remarks, she described being deeply shaken by the shooting and expressed support for those directly impacted. School district officials also offered condolences to the victims and their families, acknowledging the trauma experienced by graduates whose celebration ended in tragedy. For many attendees, the evening had begun with applause, photographs and plans for the future before abruptly turning into a scene marked by emergency vehicles, police tape and uncertainty. Families who had gathered to honor graduates instead found themselves seeking information about victims and waiting for answers from investigators. The emotional aftermath is expected to continue long after the ceremony itself has ended.
Authorities said the case remains under investigation, with detectives continuing interviews and evidence collection. No arrests had been announced as of Thursday, and officials said further updates would be provided as new information becomes available.
Author note: Last updated June 5, 2026.