A lockdown at Chula Vista High School has been lifted, according to police.
The lockdown started shortly before 9 a.m. when a suspended student was spotted on campus at 820 Fourth Ave. riding a bicycle.
The student had been suspended for sending a threatening letter to a teacher, according to Chula Vista police.
Law enforcement officers searched the campus for the student while the campus was on lockdown.
Students and teachers saw the student, according to Sweetwater Union School District spokesperson Manuel Rubio.
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