(CNN) Violence against the Rohingya in Myanmar's northern Rakhine State was "extreme, large-scale, widespread, and seemingly geared toward both terrorizing the population and driving out the Rohingya residents," a US State Department investigation found. However, the report stopped short of calling the violence "genocide."

The results of the investigation, which were quietly released on Monday, suggested that Myanmar's security forces engaged in a "well planned and coordinated" campaign of violence against the Muslim minority.

The State Department worked with human rights investigators in the spring of 2018 to conduct surveys with more than 1,000 Rohingya refugees in camps in Bangladesh. Their testimonies paint a shocking portrait of the atrocities committed over the past two years.

"I had to choose between my children and my mother... I had only two hands and two children," a 35-year-old male refugee described.

According to the report, most of the refugees witnessed a killing, two-thirds witnessed an injury, and half witnessed sexual violence. One-fifth of the refugees in the survey witnessed a mass-casualty event with more than 100 people. Seventy-five percent said they saw members of the army kill someone. That same percentage said they saw the army destroy huts and villages.

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