Several Highland students took to social media this morning to alert other students to not show up to school.
Sheriff Jim McDonnell said the response involved multiple agencies and an active investigation is underway. Some students and staff members said they were initially were concerned that they might be facing a mass shooting situation. Paramedics have been notified of at least one individual with a gunshot wound, NBC News reported.
A 14-year-old was arrested Friday for shooting a student at a high school north of Los Angeles, authorities said.
The victim, also 14, was taken to the hospital and is expected to make a full recovery, a Los Angeles County sheriff's spokeswoman said.
Highland High School has about 3,000 students in Grades 9 through 12.
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The Bureau of Alcohol, Firearms, Tobacco and Explosives also responded to the scene.
Deputies tweeted that they searched the elementary school campus and announced all clear.
"I was supposed to be going to school earlier than I was, but was late", she said.
A concerned parent waiting for her son near Highland High said she got a text from him saying he heard a gunshot and that he had locked himself in a classroom.
News Source LA reports that one person called 911 to report a shooting at Manzanita Elementary School.
This footage shows a juvenile male in custody inside a Los Angeles County Sheriff's Department vehicle outside a shopping mall close to the school. No further details have been released, and police would not confirm if there was actually a person with a gun on campus.