Professor Green: We all make mistakes in life
23 October 2014 Last updated at 07:44 BST
Professor Green has spoken to Newsbeat about his confrontation with a fan during a gig in Durham.
Footage uploaded appears to show the rapper "slapping" a man he claims was calling him names.
Durham University and Durham Students' Union were working together to find out what happened.
Professor Green spoke to entertainment reporter Nesta McGregor at the 2014 Mobo Awards.