MANDAN, N.D. (AP) — A former Mandan High School student accused of bringing a loaded gun to school has pleaded not guilty to four charges.

Eighteen-year-old Todd Miller faces felony counts of accomplice to terrorizing and reckless endangerment, and misdemeanor drug and weapon counts. He could face up to 12 years in prison if convicted. His trial is scheduled for mid-September.

The school was put in lockdown on May 2 when police received a tip that a student had brought a gun to school. Police said they found the gun on Miller.

A 16-year-old boy also was arrested. His case is being handled in juvenile court, where proceedings are not open to the public.

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