Zeid Ra'ad al-Hussein reiterated while in Indonesia on Monday that acts of genocide and ethnic cleansing may have occurred in the campaign of violence against Rohingya that sparked an exodus of nearly one million people to neighboring Bangladesh, AP reported.
"Myanmar faces a very serious crisis with a potentially severe impact on the security of the region," Zeid said.
"If the Rohingya crisis were to spark a broader conflict based on religious identities, the ensuing disputes could be a cause for great alarm," he added.
Indonesia's poor human rights record including persecution of LGBT people is expected to be under scrutiny during Zeid's three-day visit.