Two teenage boys have been charged over allegedly planning an attack on a country South Australian school.
The plan allegedly involved the use of firearms and explosives which police said "could have led to multiple deaths".
A 16-year-old boy has been charged with solicit to murder. A second teen, 18, has been charged with four counts of aggravated threats. Both remain in police custody.
Police say there is "no risk at this time" to locals residents.
Police conducted an extensive investigation of several properties and seized multiple weapons after receiving information on November 3.
"There is no evidence to show that any other person was linked with this matter, nor did the two individuals have possession of firearms," said detective superintendent Des Bray.