(KRON) — The students at the high school have been released and the lock downs at the other schools have been lifted.

Three San Francisco schools were placed on lockdown Friday morning due to a bomb threat. Additionally, Lafayette Elementary School and Presidio Middle School were also placed on lockdown as a precaution.

Around 10:45 a.m., school officials at George Washington High School, located at 599 30th Ave. in San Francisco, received a call from a person who said they were near the school and had a bomb, according to San Francisco Unified School District officials.

Police responded to the scene and sealed a perimeter around the high school. No one was allowed in or out of the school.

All students and staff are safe and the school is working closely with San Francisco Police Department to investigate.

Lafayette Elementary School, located at 4545 Anza St. in San Francisco and Presidio Middle School, located at 450 30th Avenue in San Francisco, had also been placed on lockdown as precaution, according to district officials.

George Washington High School is currently being evacuated.

Students were released from the school around 12:30 p.m., according to San Francisco Unified School District officials.

Students who take the bus were walked out by school officials and guided to their buses. Students who needed to be picked up were taken to Lafayette Elementary School to wait for their rides.

The lockdown was lifted from Presidio Middle School and Lafayette Elementary School around 1:30 p.m. Normal school operations have resumed and students will be released at their usual dismissal time.

San Francisco Unified School District officials announced that there will be a news conference regarding the lockdown of George Washington High School.

School District officials will discuss the bomb threat that caused a lockdown this morning around San Francisco’s Central Richmond District.

KRON4 News is attending the conference this afternoon. Stay with KRON4 News for updates as they will be provided as they become available.

Bay City News contributed to this report.