Another 14-year-old male was taken into custody as multiple agents, including the Federal Bureau of Investigation, remain on the scene. WATCH: Sheriff's spokesman discusses school shooting in Palmdale Student Pauline Guijaro said she heard a volley of "around 10 gunshots".
The same police force were later called to a second incident at 7.30am following reports of "shots heard near Manzanita Elementary School in Palmdale".
That individual, later identified as a 14-year-old student at the school, was detained at a shopping center.
Gigi Graciette, a Fox 11 reporter, tweeted that the suspected shooter at Highland High School is 14 years old. Palmdale is about an hour and a half north of Los Angeles. They suggest it could have kept the situation from getting worse.
Meanwhile, an elementary school just seven miles away from Highland also had a police presence. The Los Angeles County Sheriff's Department is expected to hold a press conference at 3 pm PT Friday. The campus is being searched by police.
Harris said investigators were trying to determine what led up to the shooting.