A GWS player during the 2024 AFL season. Picture: AFL Photos

GREATER Western Sydney says some of the allegations of player misbehaviour at an end-of-season function are "distressing”, but the club has also hit out at "a level of misinformation and rumour being circulated" about the event.

The AFL and the Giants confirmed on Tuesday they were investigating the end-of-season function that was held last month, days after the club's season ended with the semi-final loss to eventual premier Brisbane.

Players are facing potential sanctions after what the club said was an "anonymous allegation of inappropriate behaviour" at the event.

The AFL and the Giants have not confirmed what prompted the investigation, or what action the League might take, but the club on Wednesday hit out at "entirely inappropriate" commentary about what took place.

"The club is taking the matter very seriously and acted swiftly upon the receipt of the concerns. All parties have co-operated fully with the AFL to ensure the allegations are fully investigated," the Giants said in a statement.

"Some of the allegations are distressing and entirely contrary to the club's values and policies. There is also a level of misinformation and rumour being circulated which is entirely inappropriate, particularly while the investigation is ongoing. The club will comment further once the outcomes of the investigation are finalised."

GWS had a straight-sets exit last month after finishing fourth in the regular season, blowing leads in a qualifying final against Sydney and a home semi-final against the Lions.

"The AFL and GWS have been undertaking an investigation into the Giants players' post-season event, which is in its final stages," the League said in a statement on Tuesday.