Walter Barton
Walter Barton was executed by the state of Missouri on May 19, 2020, in a state prison. He maintained his innocence until the end. His attorneys had obtained affidavits from jurors who said that new blood spatter evidence would have affected their view of his guilt, and the Innocence Project and other groups asked the governor to halt the execution and convene a Board of Inquiry. According to the account, no hearing on the new evidence was held before the execution took place.
Cause of death, as reported: Executed by the state. Barton's attorneys say he maintained his innocence and that jurors' affidavits show new blood spatter evidence would have affected their view of his guilt.
Reported by: Missouri Department of Corrections (the agency that held him); his attorneys.