More schools across Sydney have been evacuated for the fifth consecutive day as police warn about hoax calls from overseas.
Police confirmed on Thursday an operation was underway at Kings Cross, Green Valley, Botany Bay and Penrith.
Students from Tempe High School have also been evacuated due to threats, according to a parent of a student.
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SA school evacuated after bomb threats
A number of Adelaide schools have been evacuated after receiving bomb threats.
Police confirmed on Thursday they were coordinating a response at the affected schools with the state education department.
The source of the threats and whether they're linked to a number of coordinated phone threats at schools across Sydney is also being investigated.
ACT teen arrested over school hoax threat
A teenager in the ACT has been arrested following a threatening call made to a Canberra high school.
Police say the teen phoned Calwell High School about 1pm on Wednesday, sparking an evacuation as the call was investigated.
An ACT police spokeswoman says the call is not linked to hoax threats coming from overseas that have disrupted schools across Australia, including Canberra, in the past week.
"There is nothing funny about a threatening phone call that causes unnecessary distress, fear and use of valuable police resources," Detective Acting Station Sergeant Marcus Boorman said on Thursday.
The teen is expected to be charged at the ACT Children's Court on Tuesday.
The arrest comes as schools in NSW have been disrupted on Thursday with threatening calls for a fifth consecutive day.
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