The 26-year-old, whose real name is Lloyd Polite jnr, had been in Auckland for a one-off show at the Civic on Friday, February 3.
Police said Polite and members of his entourage were questioned the following Saturday about the incident. But it could not be determined who "threw the first hit" and the victims did not want to press charges, so the group were released and carried on to catch their planned flight.
A police source said it was not suggested that Polite hit anyone, but he was identified as being at the scene.
A relative of the injured man said he believed he was hit by a bodyguard of Polite.
She said the man woke in hospital and at first did not remember the attack, or even his own birthday. He was at home on Saturday when police called him to say the alleged attackers were being questioned. Police tracked the group down at their hotel through records at the company they hired their bikes from. "The police rang and asked him if he wanted to press charges. At that point he had no idea who it was," the relative said. "He [the victim] didn't want to press charges, he just wanted them out of the country."
The victim went online to research him.
"I couldn't believe it when I found out. We found a video of a meet-and-greet in Sydney and Lloyd was there with a bodyguard.
"He [the victim] went, 'Oh my God, that's the guy that knocked me out'."
The relative understood police could not take the matter further if the victims did not want charges laid.