Sgt. Edward Bernal of the Los Angeles School Police Department (LAPD) told KTLA television that the condition of the victims is now unknown.
Two students were injured in a shooting inside a school in Los Angeles, the USA.
At least one student who was in the classroom when the shooting occurred told a reporter Thursday that he thought the gunfire was unintentional.
The Los Angeles Unified School District has a policy requiring every middle and high school campus to conduct daily random searches by metal-detector wands at different hours of the school day for students in the sixth grade and up.
Later in the day, LAPD officials confirmed the suspect was booked on a charge of negligent discharge of a firearm but still had not released information about the circumstances leading up to the shooting.
The suspect was arrested at the scene and charged in juvenile court yesterday with felony counts of being a minor in possession of a firearm and having a weapon on school grounds.
Police spokesman Josh Rubenstein said investigators believe the bullet struck a 15-year-old girl in a wrist and then hit another classmate in the head. The girl holding the firearm "didn't mean to" shoot the 15-year-old girl, he said, according to the station.
Two other students, ages 11 and 12, suffered graze wounds and were treated and released.
News footage from shortly after the incident showed police walking a young dark-haired girl in a sweatshirt from the school in handcuffs.
"I'm anxious about the kids who got shot", he said.
FEMA changes mind, will continue to help hurricane-ravaged Puerto Rico
He did not say when the agency would finalize its plan to hand the remaining supplies over to the Puerto Rican government. The agency said Wednesday that distribution of supplies already stockpiled on the island will continue.
Los Angeles police responded to the incident at about 4 a.m. near Western Avenue and 29th Street.
"The physical evidence seems to support that it was discharged from within the backpack", LAPD Deputy Chief Robert Arcos said Friday morning.
"The school has been declared safe at this point". "They thought it was a fake gun".
"She was crying", Jordan said.
She texted that she was sitting next to two girls who were injured.
'Our children now see more shootings and deaths than we ever did in my lifetime, ' USC Medical Hospital assistant director Inez Beckon-English said.
Hernandez left work and sped to the school campus.
We are fully cooperating with the Los Angeles Police Department in its investigation of this matter.
A student and parent react while leaving campus at Salvadore Castro Middle School in Los Angeles, California on February 1, 2018.
Diego Salinas said when his sister texted him from the middle school, he immediately rushed over.