“New reports and footage emerging from Tigray of extrajudicial killings, murders of civilians, sexual and gender-based violence, and forced displacement are deeply disturbing,” Coons, a Delaware Democrat, tweeted Saturday.

His comments come after a CNN investigation found that men wearing Ethiopian army uniforms executed unarmed men in Tigray. A BBC-led investigation also published Thursday corroborated the same massacre near Mahibere Dego, a mountainous area of central Tigray.

Coons said it is “critical” that the Ethiopian Human Rights Commission (EHRC) and the United Nations Human Rights office “have the necessary access and support required to carry out a thorough, independent, and transparent investigation into war crimes and abuses by all actors.”