Two teenagers have been charged after allegedly planning a school attack in the Riverland region, SA which could have led to multiple deaths.
One boy has been charged with solicit to murder, with the second charged with four counts of aggravated threats.
"Police will allege that they intended to cause harm to a large number of people, however this plan was thwarted," Detective Superintendent Des Bray said on Wednesday.
"There is no evidence to show that any other person was linked with this matter, nor did the two individuals have possession of firearms.
"Both remain in custody and there is no risk at this time to the community."
Aged just 16 and 18, the boys were allegedly planning on carrying out the attack using firearms and explosives sometime between June 1 and November 7.
The teens were initially arrested on firearm charges, however, will face more serious charges now that an extensive investigation is underway.