About 30 schools in Australia have been fully or partially closed after a warning over asbestos risks in children's sand.
A recall notice for the coloured products, which were found to contain traces of tremolite asbestos, was issued by the Australian Competition & Consumer Commission (ACCC) on Wednesday.
The regulator said there was a "low" risk that the asbestos could become airborne or fine enough for inhalation, but it "may still pose a risk".
On Friday, at least 15 schools and seven preschools in the Australian Capital Territory (ACT) - where Canberra is situated - were fully closed, with six others partially closed as a precaution. There are also reports of a school closure in Queensland.
The ACCC said tremolite asbestos, a naturally occurring asbestos, had been detected in some samples after laboratory testing.
