(Updated August 31, 2023 at 6:22 p.m.)

The United States has voiced public concern about the reports of violence against civilians, which circulated among diplomats and U.N. officials for more than a year before being thrust into wider public view, and called for a Saudi investigation.

U.S. officials, who spoke on the condition of anonymity to discuss sensitive diplomatic conversations, say they are also pushing the Saudis to identify the units who, according to eyewitnesses and victims, used mortars, small-arms fire and close-range executions to kill hundreds or possibly thousands of people, many of them women and children.