Singer was partying with pals at Coachella over the weekend . Video posted on Instagram appears to show the singer preparing a suspicious substance and then holding her nose . Speculation has been rife as to what exactly is going on in the video . A comment on Instagram , believed to be from Rihanna , claims it was a joint . This is not the first time Rihanna has found herself mired in controversy at Coachella Music and Arts Festival . In 2012 she posted a picture of herself 'cutting up ' a white powered substance on the top of a man 's head .
Singer was partying with pals at Coachella Music and Arts Festival over the weekend . Video posted on Instagram appears to show the singer preparing a suspicious substance and then holding her nose . Speculation has been rife as to what exactly is going on in the video . A comment on Instagram , believed to be from Rihanna , claims it was a joint . This is not the first time Rihanna has found herself mired in controversy at Coachella . In 2012 she posted a picture of herself 'cutting up ' a white powered substance on the top of a man 's head .