PHILADELPHIA (CBS) — Philadelphia police say a student has been arrested after a gun was recovered at a high school in the East Germantown section of the city.

Parkway Northwest High School on the 6200 block of Crittenden Street was placed on lockdown after police say a gun was recovered in a second-floor locker at the school around 10:30 a.m.

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The lockdown has been lifted.

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The entire school was searched by a K-9.

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Police say one male juvenile student is in custody.