Ravers have been robbed and assaulted during a dance party in Yarraville.

The late-night rave took place in an abandoned building on Fogarty Avenue at the Queens Birthday Long weekend.

Police say five unknown offenders attacked ravers.

They also stole their wallets, mobile phones, bags and passports.

Investigators have today released digital images of a man and a woman with whom they wish to speak (above).

The pair thought to be aged in their 20s, and were dressed in dark clothing.