A group of anti-vaccination protesters have been let into Parliament House as hundreds of demonstrators held rallies outside the building.
United Australia Party MP Craig Kelly, who has been a vocal advocate against vaccines, negotiated for a small group of protesters to be signed in as his visitors.
Mr Kelly had been trying to let a group of protesters to enter parliament, which has been closed to the public during the sitting week because of COVID-19 protocols, to hand a list of demands to the government.
The group has been calling for an end to vaccine mandates.
The Convoy to Canberra have been holding protests there for more than a week, targeting Parliament House, the governor-general's residence and the National Press Club.
Police had warned Tuesday's protests, to coincide with the resumption of parliament, would be the largest yet.
While the number of protesters are in the hundreds, it is well below the more than 3000 expected to attend.
Vocal anti-vaccination government senator Gerard Rennick was among those protesting outside Parliament House.
The rogue Liberal said he was working to make sure children were not vaccinated against the virus.
There is a large police presence around Parliament House, with protesters forced to stay inside large orange barricades set up on the front lawns.
Meanwhile, a GoFundMe campaign that had raised more than $179,000 for the protests has been cancelled by the crowdfunding site.
The campaign was removed from the website for breaching the company's terms of service.
