Old Parliament House

Protesters set Old Parliament House in Canberra on fire

No-one was injured in the fire, which engulfed the Old Parliament House's front doors before it was put out.

It follows a fortnight of protest activity at the site, police said.

Protest violence on this scale is rare in Australia, but flare-ups have become more common during the pandemic.

Some of the protesters had identified themselves as part of anti-government and "sovereign citizen" groups, observers said.

Prime Minister Scott Morrison condemned the violence, saying: "This is not how Australia works."