Cops filmed dancing with swingers before Melbourne nightclub shooting

Two Victorian police officers appear to have been caught on video dancing with costumed women at a fancy dress swingers party hours before heavily armed cops stormed in and shot two people.

Footage from inside Melbourne's Inflation nightclub shows two uniformed male officers dancing with a number of women at the swingers party on July 8.

At no point during the 10-minute interlude do either of the armed officers attempt to rebuff the advances of multiple women.

Another woman can be seen "twerking" against a second officer in what is sure to create further embarrassment for Victoria Police.

One woman can be seen wrapping her arms around the armed officer on the Inflation dance floor. Source: Supplied

Footage from inside Melbourne's Inflation nightclub shows two uniformed male officers dancing with a number of women at the swingers party on July 8. Source: Supplied

Just hours later, special operations police stormed into the nightclub and shot a man and a woman, dressed as the Joker and Harley Quinn, after a report about the man's toy gun.

The shooting victims have since been identified as 35-year-old man Dale Ewins, who required surgery on his bowel and shoulder, and local government facility co-ordinator Zita Sukys who required surgery for leg wounds.

Mr Ewins,who was wielding the fake gun as part of his Joker costume, was shot in the back, while Ms Sukys was shot in the leg.

They have since taken legal action out against Victoria Police.

Inflation nightclub owner Martha Tsamis said the club could also launch civil action against police.

"We've got staff who are traumatised. They're a bit of a mess. Young vulnerable people that go to work and don't expect to see this," she told 3AW on Monday.

Shooting victims Dale Ewins and Zita Sukys. Source: 7 News

Ms Sukys was dressed as Harley Quinn. Photo: 7 News

"There are some that have already gone on mental health plans and there are some that have got WorkCover plans that are being processed at the moment."

Ms Tsamis said police overreacted after security told them the gun was a plastic toy and club staff had assessed the man and perceived him to be no threat.

Victoria's anti-corruption watchdog is overseeing the internal investigation into the shooting, along with Victoria Police's Professional Standards Command.

Victoria Police said the investigation was ongoing and it would be inappropriate to comment further.