Many Muslims in Myanmar were killed by security forces , Buddhists , rights group says . U.N. official warns of alarming reports of violence and calls for an investigation . Government says reports of violence are false but confirms clashes with police . She called on Myanmar 's government to launch an impartial investigation into the claims . Rohingya Muslims are a minority in Myanmar and have been attacked before .
Many Muslims in Myanmar were killed by security forces , Buddhists , rights group says . U.N. official warns of alarming reports of violence and calls for an investigation . Government says reports of violence are false but confirms clashes with police . Rohingya Muslims are a minority in Myanmar and have been attacked before .