One person died and three others, including a child, were injured in a shooting Wednesday night at a high school graduation in Northern California, officials said.
A spokesperson for the Fairfield Police Department said the shooting happened around 7:15 p.m. in the parking lot at Sem Yeto High School’s graduation ceremony, which was being held at Fairfield High School, southwest of Sacramento.
One of the four people shot was declared dead at the scene, and the other three were receiving treatment at area hospitals, officials said. The severity of their injuries was not known.
Fairfield police said among the three individuals hospitalized were an 11-year-old child and two adults aged 20 and 25. The person killed was 18.
Mayor Alma Hernandez of neighboring Suisun City wrote in a Facebook post that a search was underway for the shooter.
In a statement to CBS News Sacramento, a Fairfield-Suisun Unified School District spokesperson said the shooting happened after the ceremony had ended.
@bearstrail 
The circumstances of the shooting remain under investigation. A suspect description was not available.
The Solano County Sheriff’s Office said it was assisting Fairfield police with the investigation.
Sem Yeto is a continuation high school and shares a physical campus with Fairfield High. The school district said classes will continue as scheduled through the week.
Anyone with information on the incident was urged to contact Fairfield police.
