Apr 1945
Camp authorities initiated a second round of killings at such “euthanasia” killing centers later in 1942, continuing until 1944. During this phase, around sixty transports left Ravensbrück for the “euthanasia” killing center at Hartheim, near Linz, Austria with between 60 and 1,000 prisoners each. The SS staff also murdered prisoners in the camp infirmary by lethal injection or by transferring them to the Auschwitz-Birkenau killing center. In early 1945, the SS constructed a gas chamber in Ravensbrück near the camp crematorium. The Germans gassed between 5,000 and 6,000 prisoners at Ravensbrück before Soviet troops liberated the camp in April 1945.