SYDNEY, Nov 17 (Reuters) - More than 70 schools in Australia and New Zealand were closed on Monday for cleaning after asbestos was discovered in widely used children’s play sand products.

Recalls have been issued for several colourful play sand products after laboratory testing detected traces of tremolite and chrysotile asbestos.

A number of schools and preschools in the Australian Capital Territory $(ACT)$ and one in Brisbane shut on Friday after the Australian Competition and Consumer Commission (ACCC) issued a national recall notice on Wednesday for products supplied by Educational Colours.

Further recalls were then issued by Kmart and Target on Saturday for a 14-piece sand castle building set as well as blue, green and pink magic sand.

As of Monday, more than 70 schools in the ACT were closed to allow for assessment and clean-up, the territorial government said.

“We have found that use of this product is widespread across ACT public schools,” it said.

“In the interest of the safety of our students, staff and community we have decided to close some schools that have this product.”

Asbestos is a prohibited substance in Australia and New Zealand that can cause several types of cancer when its fibres are inhaled or ingested.

The sand products used in sensory play at school were sold by retailers in Australia between 2020 and 2025, the ACCC said.

The ACCC said respiratory asbestos had not been detected in any of the tested samples.

“While the risk that any asbestos found is likely to be airborne or fine enough for inhalation is low, this may still pose a risk,” it said.

In New Zealand, local media reported at least five schools that used Kmart's sand products were closed for asbestos testing on Monday.

More than 120 have also contacted the government over fears they used one of the recalled sand products.

“We appreciate that the presence of asbestos in products that are used by children will be concerning to parents and caregivers,” said Ian Caplin, the Ministry of Business, Innovation and Employment's product safety spokesperson.

“We urge families who have purchased these products to stop using them immediately.”

(Reporting by Christine Chen in Sydney; Editing by Thomas Derpinghaus)

((christine.chen@thomsonreuters.com; +61 2 9171 7119;))