Boris Romantschenko, a 96-year-old Holocaust concentration camp survivor, was reportedly killed in Russian attack in Kharkiv of Ukraine.
According to his granddaughter, Romantschenko lived in a multi-storey building that was hit by a shell on Friday.
"Boris Romanchenko worked intensively for the memory of Nazi crimes and was vice president of the Buchenwald-Dora International Committee," a tweet from the committee, which is a forum of survivors of the Nazi concentration camps of Buchenwald, and Dora, read.
Romanchenko was a survivor of the Buchenwald, Peenemunde, Mittelbau-Dora and Bergen-Belsen concentration camps.
The forum, in a statement, said its members were “deeply dismayed” by the news.
"In 2012, Boris Romanchenko read the Buchenwald oath 'Creating a new world where peace and freedom reign' during the celebration of the anniversary of the liberation of the Buchenwald concentration camp," another tweet from the committee's handle read.
The UN has confirmed 902 civilian deaths in the war but concedes the actual toll is likely much higher. It says nearly 3.4 million people have fled Ukraine. Estimates of Russian deaths vary, but even conservative figures are in the low thousands.
Meanwhile, even as Russia intensified its attempt to pummel Mariupol into surrender, Ukraininan officials rejected a Russian demand that their forces in Mariupol lay down arms and raise white flags Monday in exchange for safe passage out of the besieged strategic port city.
—With PTI inputs
