Assault occurred earlier this month.
Police are appealing for public assistance following a sexual assault at a Melbourne gig earlier this month.
It has been reported in a statement that the assault occurred during US popstar Selena Gomez' show at Margaret Court Arena on 6 August.
It's believed a man approached a teenage girl during the concert and sexually assaulted her.
Police have released the below images of a man they believe can assist them and investigators are currently looking in to whether the same man approached others at the same show or venue the following night.
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Anyone with information on the incident or the man in question are encouraged to contact Crime Stoppers on 1800 333 000.