In its statement, the university told CNN: "We are also working with our accommodation partner to understand why the University was only alerted to this on Wednesday evening after this was reported to them in the very early hours of Tuesday".
Nottingham Police have been treating the incident as a hate crime and arrested two 18-year old men on suspicion of racially aggravated public order offences.
'The suspected perpetrators have been suspended immediately and a thorough investigation is in progress.
"We are keen to speak to anyone who may have seen, heard or witnessed the incident. We are also supporting the complainant and her flatmates".
At the time of writing the tweet Rufaro said she had not heard from the university, despite reporting the abuse and being told it would be dealt with on Tuesday morning.
A black woman studying at Nottingham Trent University was forced to hide in her halls of residence bedroom while two male students chanted racist abuse on the other side of her door.
The video shows Chisango, who says she is the only black student in her corridor, being subjected to a barrage of racial slurs before a second woman can be heard telling the men to 'leave her alone'.
"Words can not describe how sad this makes me feel, in this 2018 people think this is still acceptable".
Mario Tennis Aces Hits The Switch June 22nd
The game's product page lists a 22nd June release date for Mario's sporty Nintendo Switch game - at least in Japan. Resetera has posted the first details about the forthcoming Aces , which will reportedly come out on June 22.
"We value being a diverse global community, with staff and students from across the world. Our enquiries are ongoing".
The video is believed to have been filmed at Sandby Halls of Residence.
The story spread rapidly on social media, with Chisango's initial tweet getting tens of thousands of likes and retweets.
In response to the tweet, Edward Peck, the vice-chancellor of Nottingham Trent University, said: "All @TrentUni are appalled at this behavior which will not be tolerated".
"It was a big impact obviously, when it happened".
"I want to highlight how serious this is and if I had broken their [the uni's] table or anything they would have dealt with it straight away but not this".
Following the arrests, the university said it was cooperating fully with the police and admitted the delays in dealing with the incident were "unacceptable". "We will review our processes to ensure this never happens again".