Switzerland September 14, 2020. Martial Trezzini/Pool via REUTERS GENEVA (Reuters) - The United Nations human rights chief Michelle Bachelet on Friday expressed “increasing alarm” at violence in Ethiopia’s Tigray region and said an alleged massacre there might amount to war crimes. “There is a risk this situation will spiral totally out of control, leading to heavy casualties and destruction, as well as mass displacement within Ethiopia itself and across borders,” she said in a statement delivered by a Geneva-based spokesman, Rupert Colville.Amnesty International said scores and possibly hundreds of civilians were stabbed and hacked to death in the region on Nov. 9, citing witnesses. “If confirmed as having been deliberately carried out by a party to the current fighting, these killings of civilians would amount to war crimes and there must be an independent investigation and full accountability for what has happened,” she said.