PINOLE (CBS SF) – A middle school in Pinole was locked down Monday morning after police said a student was found with a pellet gun on campus.

Shortly before 9 a.m., officials at Pinole Middle School on 1575 Mann Drive contacted Pinole Police about a student who possibly possessed a gun. School officials then placed the campus on lockdown and detained the student in question.

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Police said during a search of the student, a pellet gun was found in the student’s backpack. No further details about the incident were immediately available.

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In a statement Monday afternoon, police said the lockdown has since been lifted and there is no threat to public safety at this time. No injuries were reported.

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The incident remains under investigation by school officials and the Pinole Police Department.