ZAC GUILDFORD: The All Blacks star awas reportedly drunk and naked in a bar in Rarotonga.

All Blacks winger Zac Guildford allegedly staggered into a Rarotonga bar naked, drunk and bleeding and assaulted two holidaymakers, it has been reported.

A Rarotonga bar worker confirmed to The Dominion Post this morning that "the All Black player Zac'' walked into the bar naked and bleeding and assaulted at least one person.

The Trader Jacks bar worker, who would not be named, said Guildford was "running around naked" in the bar on Thursday night, Cook Island time.

"By the time he got to the bar he was cut on the forehead."

Police were involved, she said.

Rarotonga police would not comment this morning.

Guildford's mother Deborah Guildford told The Dominion Post today she was aware of the incident.

"I have nothing to say."

Do you have any information this incident? Contact news@dompost.co.nz

According to the Herald on Sunday, the incident happened at 10pm Friday (NZ time).

Witnesses said the winger allegedly punched one man who asked if he needed help then hit Australian Nick Cox across the back of the head.

"I was standing at the bar waiting to get a drink and I wasn't expecting it," Cox said.

An Auckland woman, identified only as Fiona, said the All Black was ''completely out of it".

In September it was revealed Guildford indulged in a heavy drinking session following the All Blacks' 25-20 defeat to the Wallabies at Suncorp Stadium.

He made the public admission he was struggling to deal with alcohol.

"Yes, there has been [issues] and that is why I am trying to make positive steps to improve as a person and I think that will lead to me being a better player, " he said.

A Ministry of Foreign Affairs and Trade said the High Commission in Rarotonga had not been approached for consular assistance.

All Blacks representatives and the New Zealand Rugby Union have not commented on the incident today.