The 25-year-old singer, who is currently performing throughout the UK, was singing her hit song We Found Love and walking amongst fans when the incident occurred.
A fan seemed to grab Rihanna’s arm during the performance, prompting the star to smack the unidentified individual in the face with her microphone.
Later, another fan tweeted from the concert: “[Rihanna] just hit someone with her mic on accident haha oops.”
To which Rihanna replied: “Purpose! "That b***h won’t let me go".Watch the video below: