A heckler has sparked chaos at a media conference by Daniel Andrews as he announced Melbourne's lockdown would be extended by another week.  

The Victorian Premier and health officials were doing their daily Covid-19 briefing in Melbourne on Wednesday when they were interrupted by a loud commotion from the level above them.

A man claiming he had a letter for the state leader was heard screaming 'Premier Daniel Andrews' from the floor above.

He was then heard repeatedly moaning and yelling over the top of the Premier for the next 30 minutes during the briefing.

A second man was also heard screaming about health minister Martin Foley, journalists attending the briefing reported.

The Premier struggled to hear reporters' questions during the frequent interruptions as he provided an update about the latest outbreak.

A protester is seen laying on the ground surrounded by police after Premier Daniel Andrews' press conference was interrupted in Melbourne on Thursday

'No else can hear me, it's an amazing contribution you're making up there,' Mr Andrews said. 

 'We'll keep you safe too.'

Parliament security staff were forced to intervene as the man was eventually tackled to the ground by police and arrested.

Photos from the scene showing a man on the ground being spoken to and surrounded by police.  

It's understood the man had been in vicinity for hours and had been asking police to pass on notes to Mr Andrews, the Herald Sun reported.

He later claimed to have suffered a broken leg while being tackled to the ground and was later pictured being treated by paramedics and stretchered into an ambulance.

Daily Mail Australia has contacted Victoria Police for further details. 

Premier Daniel Andrews reacts to the commotion from protesters during his briefing

When asked about the commotion, the Premier told reporters the man had 'wanted to speak to me for some time'.

But he wasn't sure whether or not it was regarding about Covid-19 or lockdown.

'Whether you support me or not I will do everything I can to protect you from this virus,' Mr Andrews said.

'Shouting doesn't work against this virus. Like I said the other day, if frustration and anger was effective against coronavirus, we'd all be double dosed vaccinated by now.

'People are entitled to their views, that's fine.'

A man is is seen laying on the ground after approaching the Victorian Premier Daniel Andrews press conference

Paramedics treat a protester who claimed to have suffered a broken leg while being tackled to the ground

The injured protester was placed onto a stretcher and put into an ambulance

Melburnians will endure another week of lockdown, which has been extended until 11.59pm August 19 after 20 new cases were recorded on Wednesday.

Mr Andrews vowed to do everything he could to protect the state from the virus, regardless of what frustrated Victorians think of lockdown.

'Screaming and shouting does not work. Being frustrated, I understand that. As I said before, if it works, we would be long vaccinated, but it does not,' he said.

'This thing has changed on us. It is Delta - it is not what it was last year. It is a different thing.'

Another man speaks to police following the commotion at the Victorian Premier's press conference