Human Rights Watch said Burmese security forces have committed killings, rape, and mass arrests against Rohingya Muslims in western Burma in the aftermath of deadly sectarian violence in June. The New York-based group said in a report Wednesday that Burmese forces failed to intervene as long simmering tensions between Buddhists and Rohingya Muslims erupted into violence. Human Rights Watch’s Deputy Asia Director Elaine Pearson says once the Burmese forces contained the clashes, they carried out a campaign of violence and mass arrests against the Rohingya. “One of the problems that we were able to document was that there was collusion between the security forces and the ethnic Arakan, of which the Rohingya were really the victims.” he added.