GWS players face potential AFL sanctions, with an investigation underway after an anonymous complaint about an end-of-season function.

The league and the Giants have confirmed they are looking into what happened at the event last month, days after their season ended with the semifinal loss to premiers Brisbane.

“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.

The Giants confirmed on Tuesday it was aware of “allegations of inappropriate behaviour”.

The club released a statement on Wednesday evening saying it was “taking the matter very seriously”.

“All parties have co-operated fully with the AFL to ensure the allegations are fully investigated,” the statement read.

“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.”

The AFL and the Giants have not confirmed what prompted the investigation, or what action the league might take.

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

AAP