The 13-year-old boy was initially arrested over reports he had entered a business with a knife in Maryborough last week.

The 13-year-old boy was initially arrested over reports he had entered a business with a knife in Maryborough last week.

The 13-year-old boy was initially arrested over reports he had entered a service station with a knife in Maryborough last week.

Alleged threat on regional school north of Brisbane was ‘quite well advanced’, state counter-terrorism police say