Rapper Krept suffered slash injuries in a knife attack backstage at a Radio 1Xtra show in Birmingham, The Independent understands.
The live event at Arena Birmingham was halted late on Saturday night after the “isolated serious incident”.
Police said a man suffered a "slash injury" in the attack and a source confirmed to The Independent that the victim was the 29-year-old, one half of duo Krept and Konan.
West Midlands Police said: “He was treated by on site medical staff and did not require hospital treatment”.
Krept has since tweeted thanking fans for their support: "I'll be back in no time," he wrote. "God was with me trust me. Can't keep a good man down."
Krept’s collaborator Konan and the pair's manager Docta Cosmic also both tweeted to say that the rapper is “good”.
The concert featured a line-up including AJ Tracey, Aitch, Wizkid, French Montana and Ms Banks.
Organisers announced the show had been abandoned shortly after AJ Tracey’s performance, before audience members were asked to evacuate the arena.
A Radio 1 statement said: “We’re sorry to everyone who attended 1Xtra Live in Birmingham for the early finish, however the health and safety of everyone involved is always our top priority.
“We are upset and saddened that something like this should happen to a guest at one of our events and we remain in close contact and continue to offer our full support.”
In an "unrelated incident", West Midlands Police arrested a 23-year-old man on suspicion of possession of a knife at door six of Arena Birmingham, the man remains in custody this morning.
West Midlands Police has appealed for anyone with information about the attack to get in touch.
The force can be contacted via either Live Chat or the 101 non-emergency number.
