A man in his mid-20s was stabbed outside Naira Marley's afrobeat concert at London's O2 Academy in Brixton on Sunday night.
According to reports, many outside the concert hall were furious and confused after the staff shut the doors for security reasons and refused to let anyone else in.
A UK metropolitan policeman, identified as @LambethMPS, broke the news on Twitter, indicating that the victim is now recuperating at the hospital.
He tweeted: “We were called to Stockwell Road, #Lambeth at 21:41hrs to a report of a stabbing. Officers and Ambulance attended and treated a man in his 20s with a stab wound.”
There has been no arrest made so far, although investigations have already been launched.