Chaparral Elementary School was reportedly on lockdown after a suspicious person possibly jumped the fence onto campus.
The Poway Unified School District (PUSD) sent parents of Chaparral Elementary en email just after 3 p.m., informing them of the lockdown.
According to the email, the school informed law enforcement and students would not be dismissed until officers give the all clear.
At approximately 3:10 p.m., the lockdown was lifted.
A spokesperson for the district told NBC 7, students saw a man jump the fence onto to campus just after school was dismissed.
The school was put on lockdown as a precaution.
Law enforcement officers searched the campus but did not find anyone.
No other information was available.