Disgraced Sydney Roosters co-skipper Mitchell Pearce has admitted he has a problem with alcohol which he needs to address.

Pearce apologised for his actions when he addressed media briefly in the wake of his lewd behaviour at a boozy Australia Day party in which he simulated a sex act with a dog.

“I would like to unreservedly apologise to everyone for my actions over the last three days,” said Pearce, who did not take questions from reporters.

“My behaviour was unacceptable, I’m embarrassed and take full responsibility for my actions.

“I acknowledge that I have a problem with alcohol and it’s something I need to address.

“It’s not an excuse but a realisation that I finally need help.

“Together with the club I’m working on a solution to address these issues and it will come out in the next couple of days.”