Authorities in the St. Louis region say the alarming increase in schools threats are draining resources, both from schools and police agencies who respond.

St. Ann, Missouri, police said they thwarted a possible school shooting. The teen was charged with first-degree terrorist threat, resisting arrest and unlawful use of weapons.

The charging documents allege the parents put the ammo into a backpack and gave it to someone else in an effort to hide it from police.

Apopka police arrested a 15-year-old on Friday after the student made a threat against Apopka High School during a live-streamed pep rally, where the threat was posted in the chat.

Meriden police have made two arrests in a recent surge in threats directed at schools, the district's superintendent said in a message Thursday.