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Police arrested a 12-year-old boy after receiving a voicemail from a witness stating the boy threatened to carry out a school shooting at a Rancho Cucamonga middle school last week.

Officers went to the school Nov. 8 after administrators stated they received a voicemail from a witness who saw the threats on Snapchat, according to a news release issued Tuesday by the Rancho Cucamonga Police Department.

On Snapchat, the boy threatened to shoot one student in particular and then threatened to shoot the rest of the school.

Investigators were able to determine the message was posted by a 12-year-old male student and took him into custody on suspicion of making criminal threats.

The boy was taken to the San Bernardino Juvenile Hall.

Police did not name the school but gave an address for the incident as the 6400 block of Mayberry Avenue, which is where Vineyard Junior High is located.

This investigation is ongoing and anyone with additional information can contact Rancho Cucamonga police or call 800-782-7463 or go to