Mass executions at Babi Yar continued until the Nazis evacuated the city of Kyiv. On 10 January 1942 about 100 captured Soviet sailors were executed there after being forced to disinter and cremate the bodies of previous victims. In addition, Babi Yar became a place of execution of residents of five Gypsy camps. Patients of the Ivan Pavlov Psychiatric Hospital were gassed and then dumped into the ravine. Thousands of other Ukrainians were killed at Babi Yar. Among those murdered were 621 members of the Organization of Ukrainian Nationalists (OUN). Ukrainian poet and activist Olena Teliha and her husband, and renowned bandurist Mykhailo Teliha, were murdered there on 21 February 1942. Also killed in 1941 was Ukrainian activist writer Ivan Rohach, his sister, and his staff.