Joseph Paul Franklin

(Missouri Department of Corrections)

Update 7:52 a.m 11/20/13:

Missouri carried out the execution of Joseph Paul Franklin a little after 6 a.m. He was put to death after courts overturned Tuesday's stays of execution.

Yesterday, two federal judges issued stays of execution.

The judges took issue with how the state was getting its lethal injection drug from a secret source not regulated by the Food and Drug Administration, and questioned whether the inmate was mentally competent to be executed.

The state of Missouri, led by Attorney General Chris Koster, appealed quickly.

(UPI/Bill Greenblatt)

MissouriĀ Gov. Jay Nixon has refused to halt the execution of white supremacist serial killer Joseph Paul Franklin, calling his crime in Missouri a "cowardly and calculated shooting."

Nixon's office announced the decision Monday afternoon.