HUGO, Okla. (KTEN) -- Hugo High School was placed on lockdown Tuesday after a student brought a gun into a classroom on the second day of the new school year.

Administrators said the discovery followed a tip shortly before 10 a.m. The male student was arrested after police found a loaded pistol in his backpack. Superintendent for Hugo Public Schools, Earl Dalke, said the student will not be returning to school.

Another student was arrested for suspected possession of marijuana. Both students were later released to their parents.

Bringing a gun to school is illegal in the state of Oklahoma; it's a misdemeanor offense, punishable by a fine of up to $250.

Regular classes resumed around 11:30 a.m. as the lockdown was lifted.

"All of our students are safe," said Superintendent Earl Dalke. "Of course, our first priority is the safety of our students and our staff, and we're happy that this turned out well. We're very disappointed that something like this happened in Hugo; it's a rare instance for something like this to happen in Hugo."

The district expressed its gratitude to law enforcement with a Facebook post.