Two Australian teens convicted under counter-terrorism laws as AFP and Asio warn of ‘early signs of radicalisation’

Agencies urge parents, teachers and healthcare workers to be vigilant, paying particular attention to gaming sites and messaging platforms

• Get our breaking news email, free app or daily news podcast

Asio and the AFP have revealed that two Australian teenagers, 16 and 14, have been convicted under the country's counter-terrorism laws.

The anonymised details of the two unrelated cases were published as part of an unprecedented coordinated plea from security agencies in the Five Eyes countries - Australia, the US, Britain, Canada and New Zealand - for their citizens to do more to stop young people falling prey to radical, violent ideologies.

Sign up for Guardian Australia's breaking news email