KAUFMAN, Texas (AP) -

A former justice of the peace has been charged with capital murder in the slayings of a North Texas district attorney and his assistant who prosecuted him for theft.
    
Authorities announced Thursday that Eric Lyle Williams is charged in the shooting deaths of Kaufman County District Attorney Mike McLelland and his wife, Cynthia, last month, and assistant prosecutor Mark Hasse in January.
    
Williams has been in jail since he was arrested Saturday and charged with making a terroristic threat. Authorities say the 46-year-old emailed an anonymous threat to law officers one day after the McLellands were found dead.
    
Williams' wife was arrested Wednesday and charged with capital murder in the killings.
    
An arrest affidavit alleges she confessed to taking part in the killings and told her investigators her husband was the gunman.

From previous story:

Records show a man whose wife has implicated him in the slayings of two North Texas prosecutors previously served as a police officer.
    
The records provided by the Texas Commission on Law Enforcement Officer Standards and Education reveal that Eric L. Williams was an officer with at least 10 different agencies from 1987 to 2010. That included a stint as a deputy with the Kaufman County Sheriff's Department.
    
His wife, Kim Williams, was arrested Wednesday and charged with capital murder for her alleged role in the killings of Kaufman County District Attorney Mike McLelland and his wife, Cynthia, last month, and assistant prosecutor Mark Hasse in January.
    
McLelland and Hasse prosecuted Eric Williams last year for theft. The theft conviction ended Williams' career as a justice of the peace.