Police investigation traces source of bomb threats made to Adelaide schools, government infrastructure

A joint police investigation has traced the source of a series of frightening bomb threats made across Adelaide, as an expert reveals what could be the motive.

Bomb threats made to schools, hospitals and public places have been traced to an overseas origin following a joint investigation between South Australian and Australian Federal Police.

SA Police said in a statement investigations into the incidents, which were established to have come from a foreign source, would continue.

“South Australia Police continue to work with our federal and overseas counterparts to investigate these incidents,” the statement read.

“We wish to reassure the community that there has been no risk to public safety.”

Joel Lisk, research fellow at Flinders University’s Jeff Bleich Centre, which focuses on digital technology and security, said the threats could be “a mix of interference and nuisance”.

“It inconveniences people’s lives and it exposes a vulnerability,” Mr Lisk said.

He explained the incidents reveal to the sender of the threats how quickly the target responds.

“If you’re looking at other activities that are more nefarious (than threats) you’ll see how quickly the response is,” he said.

Students return to East Adelaide School in St Peter’s after an all-clear over a bomb threat it via email. Picture: NCA NewsWIRE / Emma Brasier

An empty East Adelaide School after it was evacuated over a bomb threat. Picture: NCA NewsWIRE / Emma Brasier

“Any info in the right hands can be used for an advantage.”

Mr Lisk said it was “difficult to see the materiality out of it” for the average person.

However, he added the threat’s origin could be “ranging from something really organised, to nuisance calls”.

Last week, defence personnel at the Keswick Army Barracks were forced to evacuate after a bomb threat.

The threat was reportedly made on August 29.

A defence spokesman confirmed an “incident” had taken place at the facility.

“Defence is aware of an incident at Keswick Barracks resulting in an evacuation,” he said. “Defence is unable to comment further at this time, please direct all inquiries to South Australian Police.”

On August 22, bomb threats were made to multiple schools across South Australia as well as Flinders Medical Centre – which was also dealing with a power blackout.

It is understood East Adelaide School in St Peters was placed into lockdown because of the threat.

Kids return to East Adelaide School after the all clear. Picture: NCA NewsWIRE / Emma Brasier

During the incident, principal Vicki Stravinski informed parents that students already at school would be evacuated.

Ms Stravinski’s statement via email said the Education Department had advised all families to keep their children at home while the matter was ongoing.

“We will notify you as soon as possible about children being able to attend,” the letter to parents said.

“Students who are already at the school for OSHC or sports training will be managed by staff and evacuated off site as per our emergency procedures.”