Balboa High student faces felony weapons charges in gun discharge incident

Parents wait for their children to be released after a report of a shooting at Balboa High School Thursday, Aug. 30, 2018 in San Francisco. Police said they arrested three people Thursday after responding to a report of a gunshot inside the San Francisco high school. A gun was recovered on school grounds, but police spokeswoman Grace Gatapandan declined to say if it had been fired. (Kevin N. Hume/The San Francisco Examiner via AP) less Parents wait for their children to be released after a report of a shooting at Balboa High School Thursday, Aug. 30, 2018 in San Francisco. Police said they arrested three people Thursday after responding to a ... more Photo: Kevin N. Hume / Associated Press Photo: Kevin N. Hume / Associated Press Image 1 of / 1 Caption Close Balboa High student faces felony weapons charges in gun discharge incident 1 / 1 Back to Gallery

A Balboa High School student is facing multiple weapons charges in connection with a firearm discharging at the school in an incident that sent hundreds of students into hiding, police announced Friday.

The student has been booked into the Juvenile Justice Center in San Francisco on felony charges including: assault with a firearm, carrying a concealed firearm, possession of ammunition on school grounds, minor in possession of a firearm, concealed weapon on school grounds, minor in possession of live ammunition, and negligent discharge of a firearm, police said.

Three other students were released to their parents but may face charges pending further investigation, police said.

A police log states that the age of the student facing the charges is 14 but police officers declined to confirm the age.

Students at Balboa reported hearing announcements on Thursday of an “armed man” on campus just after 11 a.m. Teachers shut off classroom lights and sent students into corners of classrooms and under desks.

Three nearby schools, including Leadership High School, Denman Middle School, and San Miguel Early Education School, were placed on lockdown while dozens of police officers swarmed the campus.

After a “methodical” search of the campus, police detained four students in connection with the gun-related incident.

Officials announced they recovered a firearm and a bullet casing, but declined to provide additional details. It is unknown where the student acquired the firearm.

One student was treated for non-life-threatening injuries unrelated to the firearm discharge and later released to his parents. There were no other reports of injuries, according to the San Francisco Police Department.

Anyone with information can contact the San Francisco Police Department tip line at 415-575-4444 or text a tip to TIP411 and begin the message with SFPD. Callers may remain anonymous.

The San Francisco Police Department typically works with the San Francisco Unified School District, the San Francisco Fire Department and the Bureau of Alcohol, Tobacco, Firearms, and Explosives during investigations of these types of incidents.

Lauren Hernandez is a San Francisco Chronicle staff writer. Email: lauren.hernandez@sfchronicle.com Twitter: @LaurenPorFavor