Authorities in St. Bernard Parish on Monday arrested a 12-year-old boy who took a handgun to Andrew Jackson Middle School. The boy also was in possession of ammunition.

The Chalmette boy, whose name was not released, was booked with introduction of a weapon into a school, according to the Sheriff’s Office.

Students saw the gun, but authorities said he did not make any threats. The weapon apparently belongs to the child’s mother.

“An investigation so far hasn’t uncovered any plan by the student to use the weapon at the school,” said Steve Cannizaro, a Sheriff’s Office spokesman.