CHANDLER, Ariz. - Police in Chandler arrested a student at Santan Junior High School Tuesday after finding a revolver and ammunition in his backpack, police said.

Police officials said the school's administration was told about the gun by another student. A police spokesperson said the revolver was not loaded and the student did not threaten anyone or brandish the weapon.

Officers went to the school around 1:40 p.m. Tuesday, and found the gun and ammunition in the student's backpack.

Chandler PD said the boy is a 13-year-old seventh-grader at the school and he was booked into Maricopa County juvenile detention center Tuesday. He faces charges including misconduct involving weapons, carrying a concealed weapon and disruption of an educational facility.

Chandler Unified School District has not released any statement about the arrest.