Russian forces are creating lists of identified Ukrainians to be killed or sent to camps, and that Russian troops will likely use lethal measures to break up peaceful protests.
The letter was published by The Washington Post on Sunday and was addressed to the U.N. High Commissioner for Human Rights.
The United States has obtained disturbing information that indicates that human rights violations and abuses in the aftermath of a further invasion are being planned.
Russian forces are creating lists of identified Ukrainians to be killed or sent to campus following a military occupation, according to credible information. We have credible information that Russian forces will use lethal measures to break up peaceful protests or counter peaceful exercises of perceived resistance from civilians.
The letter doesn't give any more details.
On Sunday the Ukrainian city of Mariupol issued a statement claiming that its residents were being taken to Russia against their will and a Ukrainian lawmaker said they were being forced into labor in remote areas of Russia.
According to the city statement, several thousand Mariupol residents have been taken to the Russian territory over the past week.
The AP reported that Russian-backed rebels in eastern Ukraine said that they had taken nearly 3000 people from Mariupol to Russia.
According to Inna Sovsun, the citizens of Mariupol are going to be forced to sign papers in order to stay in the area for two or three years.
According to four individuals familiar with U.S. intelligence, a Thursday article in Foreign Policy reported that Russia has drafted lists of Ukrainian political figures and other prominent individuals to be targeted for assassination in the event of a Russian assault on Ukraine.