During the official stage of Action T4, 70,273 people were killed, but the Nuremberg Trials found evidence that German and Austrian physicians continued the euthanization of patients after October 1941 and that about 275,000 people were murdered under T4. More recent research based on files recovered after 1990 gives a figure of at least 200,000 physically or mentally handicapped people killed by medication, starvation, or in the gas chambers between 1939 and 1945.