In early 1943, prisoners in the forced-labor camp organized an underground resistance movement. By late 1943, the prisoners, realizing that gassing operations in Sobibor were coming to an end, planned for an uprising. On October 14, 1943, the 600 forced labor prisoners attempted a revolt and mass escape from the camp. Prisoners killed several German and Ukrainian guards. Of the 300 prisoners that escaped; over 100 were recaptured and later shot. After the revolt, Sobibor was closed and the camp dismantled.