According to media reports, one of the schools involved confirmed it had received a bomb threat via an electronic voice message.

However, she said there was "nothing to substantiate that there is anything serious at any of them at this stage".

The NSW Department of Education also confirmed it was working with police after "several schools received threats today".

NSW police said the threats were "very low level" and there was "nothing at all" to suggest the threats were related to terrorism.

On Friday, at least 15 schools in NSW and Victoria were evacuated after receiving threatening phone calls that were found to be hoaxes.

Australia has raised the terror threat alert level to high in September 2014, with the government passing a series of national security laws and police conducting numerous raids across the country.

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