The Los Angeles County Fire Department says there are five confirmed injuries following a shooting at Saugus High School in the city of Santa Clarita.
The shooting occurred at Saugus High School about 30 miles (48 kilometers) northwest of downtown Los Angeles.
Scores of parents are in park near a Southern California high school, where they are supposed to be reunited with their children following reports of a school shooting.
Police from federal, state and local departments were converged in a parking lot.
With files from the Associated Press
Cathy Paine, school psychologist based in Oregon and lead of the National Crisis Response Team for the National Association of School Psychologists
Michael Dorn, Executive Director, Safe Havens International, a non-profit campus safety center that helps schools and school systems improve crisis preparedness and campus safety
Ken Trump, president of National School Safety and Security Services, a school emergency planning consulting firm based in Cleveland, Ohio
Kyle Stokes, KPCC Reporter