FAIRFIELD, Calif. — One person was killed and three others were injured in a shooting in the parking lot of Fairfield High School on Wednesday evening shortly after a graduation ceremony for Sem Yeto High School, a continuation school that shares the campus, authorities said.

Fairfield police responded to reports of gunfire around 7:15 p.m. The 18-year-old victim who died has not been publicly identified pending family notification. The three injured individuals, ages 11, 20 and 25, were transported to area hospitals with injuries that were not considered life-threatening, police said.

No suspect has been identified, and it remains unclear whether the victims were students, family members or attendees at the ceremony. Police have not released further details on the circumstances of the shooting or possible motives, saying the investigation is ongoing.

Witnesses described a chaotic scene as the graduation event concluded and families gathered for photographs. One attendee told local media the shots rang out suddenly in the parking lot, sending people running and screaming. Amanda Prieto, who lives adjacent to the school, said she was in her backyard when she heard the gunfire.

"It dawned on me quickly how close that rapid fire was," Prieto said. "I looked over the fence and people were just screaming and running through the parking lot. It was horrific."

Fairfield Mayor Catherine Moy........

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