Authorities are investigating six potential breaches of the import ban on asbestos, as custom officials increase vigilance at border checkpoints.

It comes amid concerns products featuring the deadly material have entered the country, mostly from China.

“The Australian Border Force… has significantly increased its focus on asbestos, resulting in an increased number of detections,” the Department of Immigration and Border Protection says. “There are six active criminal investigations under way into potential asbestos importation-related offences.”

The Asbestos Importation Review Report – commissioned by the border force and released last week – says asbestos checks could be improved even though end-to-end border management processes are effective.

“This report recommends raising awareness and knowledge to promote voluntary compliance and improving the overall effectiveness with a focus on refining available information, communication and education for the business community and the public,” the report says.

“A strong, continuous and dedicated information, communication and education holistic approach is essential to protecting the Australian community and environment from dangerous goods.”

Australia has banned asbestos imports since 2003 and the maximum penalty for breaches is a $170,000 fine.

Independent senator Nick Xenophon recently demanded tougher sentences, including jail.