A Mississippi teenager faces charges after a homemade explosive was found at Warren Central Junior High's library and detonated in a nearby field.

Vicksburg Police Capt. Sandra Williams said in a news release that the student of Vicksburg, about 45 miles west of Jackson, will face charges of possession of an explosive device and having weapons — knives — on school property.

The Vicksburg Post reports (http://bit.ly/1NYgsN5 ) a second student was booked with having a knife on school property but Williams said authorities don't believe that student was involved with making or transporting the device to the school.

Both students are being held pending a hearing in youth court. Their names and ages were withheld.

Police Chief Robert Stewart says a student from another school provided the initial tip about the device.

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Information from: The Vicksburg Post, http://www.vicksburgpost.com