Manly assistant Willie Peters, 38, and high performance manager Dan Ferris, 31, came to blows outside the Rocks’ Orient Hotel on Wednesday night which could cost the pair their jobs.

Police were called, however, the men refused to elaborate on the circumstances surrounding their disagreement to authorities.

Peters was issued with an infringement notice for offensive behaviour and fined by police.

Penn said sackings could follow.

“We will not tolerate violence at the Sea Eagles,” Penn told The Daily Telegraph.

“There could be dismissal if anyone is found to have breached the club’s code of conduct. We are gathering information around the incident and will conduct a thorough investigation.

Sea Eagles assistant coach Willie Peters with Blake Green and Jake Trbojevic.

“The club will work in consultation with the NRL integrity unit. As I said, this club will not tolerate violence in the workplace.”

The fist fight follows a disappointing few days for the Sea Eagles after they were evicted from the finals following a controversial 22-10 loss to the Panthers.

The club was fined $20,000 after coach Trent Barrett tore shreds off the referees in the post-match press conference.

The club has notified the NRL Integrity Unit of the incident who are leaving initial investigations with Manly and will only step in if they feel sanctions on the pair are insufficient.   

“The Manly Warringah Sea Eagles have been made aware of an incident involving two members of our coaching staff,” the Sea Eagles said in a statement.

“The club has commenced an internal review into the matter. We have notified the NRL integrity unit that we have commenced our review and will keep them fully informed.”