Caught on video unbelievably hitting a fan in the face with her microphone was Barbados-born singer Rihanna at a Birmingham, UK concert Monday evening.

In the grainy clip, which was shot by a fellow concertgoer, the troubled pop diva steps down off stage with dozens of large security guards to crowd level. While singing, Rihanna is seen to react to an earnest fan by slugging them in the face with her microphone after said fan reached out for the singers arm. It appeared to have been an overreaction based on the video and will likely end in legal action.

Monday's concert was plagued by drama as she was two hours late following a night of partying with a model friend.

She is now at the center of a Twitter storm with fans expressing their outrage at her reaction to the fan. "How can you hit a fan that was excited too see you? Don't go too the crowd if you don't expect too be grabbed fans made you," one person wrote.