A fan watching the Wisconsin-Nebraska game on Saturday was asked to remove a 'highly insensitive and offensive costume' of President Barack Obama wearing a noose around his neck.

The unnamed supporter was standing in the student section at Camp Randall Stadium in Madison, wearing a mask of Obama in a prison jumpsuit.

Someone sat alongside him held up the rope as hung around his neck.

On the other side of the costume, the supporter had on a Hillary Clinton mask — being pulled, by the rope, by a second person wearing a Donald Trump mask.

A fan at the Wisconsin-Nebraska game was asked to remove a 'highly insensitive and offensive costume' of President Barack Obama (pictured) wearing a noose around his neck

'There is a man in a very racist costume with an Obama mask and noose around his neck,' one University of Wisconsin-Madison student reported during the first half of the Badgers' victory against Nebraska, 23-17.

'Racism should NEVER be tolerated.'

In a statement, UW Athletics said the costume was 'repugnant and counter to the values of the university.

'During the first half of this evening's Wisconsin football game against Nebraska, UW officials were made aware that an individual in the seating bowl had donned a highly insensitive and offensive costume,' the university said in a statement.

On the other side of the costume, the supporter had a huge Hillary Clinton mask — being pulled, by the rope, by a second person wearing a Donald Trump mask (pictured)

'UW Athletics' guest services staff were dispatched to the individuals' seating area where they asked him ato remove the offensive components of the costume. He complied.'

But, officials added, the effigy was still 'an exercise of the individual's right to free speech.'

'The university also exercised its rights by asking the individual to remove the offensive parts of the costume,' the statement continued.

UW-Madison officials said the costume was 'repugnant and counter to the values of the university after students reported the scene (pictured)

UW officials did not specify which parts of the costume the person was asked to remove.

Fans are not allowed to enter Camp Randall with masks on, but may put them on once inside.

Inside, some fans were outraged.

'I can't imagine what it must be like for people of color who have (to) experience this disgusting amount of hate everyday — I feel sick,' wrote one student on Twitter.