During a recent concert in Birmingham, England, Rihanna was caught on video (below) hitting a fan with her microphone.
The video was apparently shot by another fan and catches Rihanna walking between the stage and the audience.
According to the Daily Mail, Rihanna slammed her mic into one fan's face without stopping the show, suggesting that she was lip-syncing.
This concert, which is part of her Diamonds World Tour, may be the same show that she was more than two hours late to start.
Rihanna was supposed to start her show at 8 p.m., but did not hit the stage until 10:30 p.m., reports RadarOnline.com.
Another Rihanna concert in the UK was panned by The London Standard, which stated: "At times Rihanna even appeared a bit bored, as you might expect from someone who's rattled off seven albums in as many years and tours relentlessly."
"As her penchant for casually singing over the top of her own records at shows suggests, Rihanna wasn’t the most vigorous performer, and she looked dead-eyed …Rihanna deserves a break and so do we."