The U.S. has reliable information that Russian military forces executed Ukrainians who were trying to surrender near Donetsk, a U.S. official said Wednesday.

According to Ambassador-at-Large for Global Criminal Justice Beth Van Schaack, the U.S. has credible reports and photos of individuals killed “execution-style” with their hands bound, including bodies showing signs of torture and accounts of sexual violence against women and girls.

“These images and reports suggest that atrocities are not the result of rogue units or individuals; they, rather, reveal a deeply disturbing pattern of systematic abuse across all areas where Russia’s forces are engaged,” she said at a United Nations meeting Wednesday.

Investigators and volunteers have also recorded what U.S. officials have described as a “troubling campaign” of brutality against civilians in towns near Kyiv after Russian forces withdrew from the area.

Ukrainian President Volodymyr Zelenskyy detailed reports of killing, rape, and torture in an address to the U.N. Security Council after visiting Bucha. He said Russian forces “killed entire families,” crushed civilians with tanks, cut off limbs, and slashed throats.

Latest developments:

►President Joe Biden delivers remarks today on the progress of the war.

►Russia shut off gas shipments to Poland and Bulgaria on Wednesday over their support of Ukraine in the war and threatened other countries with similar measures.

►Germany was the biggest buyer of Russian energy during the first two months since the start of the war in Ukraine, according to a study published Wednesday by the Centre for Research on Energy and Clean Air.

American returns home after swap with Russia despite high tensions

A prisoner swap that took place despite unprecedented tensions between Russia and the U.S. came full circle early Thursday. Trevor Reed‘s mother shared the news on Twitter that her son had returned to U.S. soil while also advocating for Paul Whelan, another American held in Russia.