Sydney Roosters coach Trent Robinson says Mitchell’s Pearce’s lewd and drunken behaviour on Australia Day was unacceptable.

NSW Origin halfback Pearce risks being sacked after video emerged in which he’s seen to make unwanted advances to a woman, simulate a lewd act with a dog and is accused of urinating on a couch.

Robinson said on Thursday Pearce’s fate would be decided in conjunction with the NRL over the next couple of days after he was stood down by the club.

“The behaviour was unacceptable, we understand that. At the Roosters we can’t accept that and we won’t,” Robinson told reporters.

Earlier, reports suggested Pearce was set to be stripped of the club co-captaincy, which he shares with hooker Jake Friend, and fined $50,000.

The NRL is also likely to impose at least a six-month suspension and his club will add an immediate sacking clause to his contract to be triggered by any further misbehaviour.

He’s also expected to be barred from travelling to England next month for the World Club Challenge and abide by a booze ban.