Described as “disgusting” by the institution, it was made using toilet paper.
The university said staff immediately removed the message once it came to light.
“This disgusting message was removed as soon as staff were made aware of it,” a spokesperson told The Independent. “It does not reflect the values of the university nor the behaviour we expect within our community and as such we have launched a full investigation into who placed it there.”
The incident comes after a group of students who reportedly made jokes about rape in private Facebook messages were suspended by the University of Warwick.
Recent research revealed that more than three in five students have been sexually assaulted or harassed while at university.
A number of law students who made racist comments were also expelled by the University of Exeter after private WhatsApp conversations were shared on Facebook.
Screenshots of the “racist and vile” messages alleged to have been sent between Bracton Law Society members were posted to Facebook by a student. They included one message which said: “If they’re black, send em back.”
Racial slurs, derogatory terms and rape “jokes” also featured in the group chat called “Dodgy Blokes Soc” .
The University of Exeter launched an internal investigation into the comments in March and earlier this month said its inquiry had resulted in “expulsions, suspensions and other significant sanctions” but the students in question had the right to appeal. It is unclear whether they opted to do so or not.