In May, the AA seized the town of Buthidaung, east of Maungdaw. Subsequent reports from activists and relatives emerged of extrajudicial killings, fighters torching and looting Rohingya neighborhoods, and forcing thousands of people to flee.

Forced recruitment of Rohingya men and boys is stoking religious tensions between the Rohingya Muslim and Rakhine Buddhist communities, the report said.

“Ethnic Rohingya and Rakhine civilians are bearing the brunt of the atrocities that the Myanmar military and opposition Arakan Army are committing,” said Elaine Pearson, Asia director at Human Rights Watch.

“Both sides are using hate speech, attacks on civilians, and massive arson to drive people from their homes and villages, raising the specter of ethnic cleansing.”

CNN’s Michael Mitsanas and Nyah Peebles contributed reporting.