An AFL investigation has begun after alleged "harmful and abhorrent racist remarks" were directed towards Western Bulldogs star Jamarra Ugle-Hagan.

The comments, understood to have come from a St Kilda fan, are said to have been directed towards Ugle-Hagan throughout and following the Bulldogs' 51-point win over the Saints at Marvel Stadium on Saturday night.

On Sunday both clubs and the AFL released separate statements condemning the behaviour with all parties now working together towards identifying individuals involved.

"Racism of any kind does not belong in our game, nor in our society. We cannot tolerate it," the Bulldogs said in a statement.

"Comments like these are extremely upsetting and cause significant hurt and harm for Aboriginal and Torres Strait Islander people. They are said to intentionally harm, and we continue to be confronted by them as a community.

"We're saddened by the constant need to reinforce the negative impact this has on the individuals concerned, and all First Nations people.

"We will continue to make a stand and call out this behaviour, and use our voice to further educate our fans and the wider community.

"The Club is supporting Jamarra, his family, and others within the Club who have justifiably been impacted by this event."

The Bulldogs thanked St Kilda for joining them to address the issue.

In their own statement the Saints acknowledged claims it was a fan of their club who made the comments.

"The club takes these matters incredibly seriously and condemns vilification of any kind," St Kilda's statement read.

"To be repeatedly addressing these repugnant instances of racism is a blight on our game and society.

"We will continue to stamp out and call out this unacceptable behaviour by having these important conversations, as well as make ongoing education available for the wider community.

"As a club, we are committed to building greater awareness of the harm caused through comments such as these.

"We will not stand for this."

The AFL similarly slammed any examples of racism in football before putting their support and backing behind the 20-year-old Ugle-Hagan.

"Racism is inexcusable and is never OK," the league said in a statement.

"Jamarra Ugle-Hagan is a young 20-year-old player trying to forge a career as an AFL footballer. An impressive young man in which part of his pride and strength comes from his family.

"We stand with his family in calling out the racist comments, comments that cause significant hurt and harm for Aboriginal and Torres Strait Islander people."

The league confirmed they had contacted the Bulldogs and Saints following the incident for investigations and to support all those impacted.

"We strongly support all our Aboriginal and Torres Strait Islander players and condemn the racial vilification of anyone in the community in football," the AFL said.