An international darts tournament in Melbourne has descended into chaos overnight when members of the crowd began throwing tables and plastic chairs.

Forty people were ejected from Etihad Stadium in Docklands and three people were treated by paramedics for minor injuries.

One person attending the tournament told Fairfax Media "drunken idiots" became bored and were "looking for a bit of excitement".

Crowd members throw chairs during the Invitational Darts Challenge at Etihad Stadium in Melbourne. (Getty) (Getty)

Some took to jumping on tables until they broke while others body-slammed fellow audience members.

Seventy security guards on duty at the stadium attempted to calm down crowd members before around 40 police were brought in to handle the situation.

The destruction led to the delay of the final match of the tournament, with winner and world number one Michael van Gerwen appearing unimpressed.

Security guards surround a pile of tables and chairs thrown by spectators at the Invitational Darts Challenge in Melbourne. (Getty) (Getty)

"The look on his face after he won, it was a look not of victory, but one of pure disgust," the witness said.

"I've never seen anything like it. It wasn't good for the sport, it wasn't good for the city's image. I thought it was terrible."

Etihad Stadium communications manager Bill Lane said the venue had an alcohol management plan and were only serving mid-strength beer.