The Rohingya are demanding to be allowed to return to their homes in Myanmar in safe and secure conditions.
A Myanmar government-appointed panel established to probe allegations of abuses against the Rohingya said on Monday it had found no evidence of genocide. Rohingya leaders branded the probe a "whitewash".
The quest for justice has been an intensely emotional one for many refugees at the camps who said they saw their family members killed.
"The killers of my son must all be punished," said 65-year-old refugee Nur Alam, whose son was allegedly shot dead by a Myanmar soldier. "Only justice can heal our wounds."