Gustine Elementary School's principal sliced with box cutter on campus

FRESNO, Calif. (KFSN) -- Gustine Elementary School was on lockdown for about twenty minutes Thursday afternoon.

Police say the school's principal was sliced in the face with what they believe was a box cutter.

There's no clear word on the principal's condition at this time. Although, the superintendent for Gustine Unified says the principal has a "serious facial injury." No one else was hurt.

Police are talking with neighbors looking for witnesses to the attack.

Watch the video for extended coverage from Action News reporter Mariana Jacob.