Meta will prevent Australians younger than 16 from accessing Facebook and Instagram from December 4, as Canberra prepares to enforce a sweeping new social media law that has sparked concerns from young people and advocates.

The US tech giant said it would start removing teenagers and children from its platforms ahead of the new Australian social media ban on users under 16 coming into effect on December 10. Aljazeera reported.

The Australian government is preparing to enforce the law with fines of up to 49.5 million Australian Dollars (US$32 million) for social media companies even as critics say the changes have been rushed through without addressing questions around privacy, and the effects on young people’s mental health and access to information.

“From today, Meta will be notifying Australian users it understands to be aged 13-15 that they will lose access to Instagram, Threads and Facebook,” Meta said in a statement.

“Meta will begin blocking new under-16 accounts and revoking existing access from 4 December, expecting to remove all known under-16s by 10 December.”

There are around 350,000 Instagram users aged between 13-15 in Australia and around 150,000 Facebook accounts, according to government figures.

Meta has started warning impacted users that they will soon be locked out.

“Soon, you’ll no longer be able to use Facebook and your profile won’t be visible to you or others,” reads a message sent to users that Meta believes to be under 16.

“When you turn 16, we’ll let you know that you can start using Facebook again.”

In addition to Facebook and Instagram, the Australian government has said that the ban will be applied to several other social media platforms, including Reddit, Snapchat, Threads, TikTok, X and YouTube.