The Ethiopian military and its allies are responsible for widespread sexual violence against women in Tigray, using rape as a strategy of war, Amnesty International says.
The scale of violations during the nine-month conflict in the north of the country amounts to war crimes, the human rights group says.
One woman reported being gang-raped in front of her children.
Ethiopian officials have not responded to the allegations.
Amnesty says “overwhelming evidence” shows sexual violence has been rampant since the very first days of the conflict.
It began last November when the region’s Tigray People’s Liberation Front (TPLF) party stormed a military base after falling out with the prime minister over his political reforms.
The rights group interviewed 63 women and children from Tigray who said they had been raped by Ethiopian or Eritrean soldiers or pro-government fighters belonging to forces and militias from the neighbouring region of Amhara.
The report’s author told the BBC their testimonies had been among the worst she had ever heard during her career.
“The level of sadistic and gratuitous brutality in addition to the rape was absolutely shocking,” Donatella Rovera said.
A 39-year-old woman reported being seized by Eritrean soldiers as she was travelling with her two children.
“Five of them raped me in front of my children,” she told Amnesty.
“They used an iron rod, which is used to clean the gun, to burn me. They inserted pieces of metal in my womb; that was what hurt me. Then they left me on the street.”
Some women Amnesty interviewed said they had been detained for weeks and repeatedly raped, often by several men.
More than half of the women accused Eritrean soldiers of carrying out the violations, identified by their Tigrinya accents and uniforms.
Amnesty is calling on the United Nations (UN) to urgently send a team of experts to Tigray to further investigate the allegations that may amount to crimes against humanity.
Ethiopian officials contacted by the BBC did not respond to requests for comment. Amnesty’s calls to Ethiopian and Eritrean authorities were also ignored.
The widespread nature of the assaults suggests military officials knew what was happening and that it was being tolerated at the highest level of government in Ethiopia and Eritrea, Amnesty said. -BBC