TODAY | April 18, 2013
>>> back now at 8:15 with new details on the killings of two prosecutors in texas. the wife of a former public official there is behind bars this morning. natalie has more on the break in that case.
>> that arrest is just the latest twist in what has been a complex, wide ranging investigation.
>> overnight, kim williams was head in the kaufman county jail on $10 million bond. she's charged with capital murder and a spokesman for the sheriff's office says new charges could be filed later today against her husband.
>> i don't think anybody could've written a novel, maybe that would've played out this story like it has come.
>> a story where the county's chief prosecutor was assassinated near the courthouse. and two months later, the d.a. and his wife were shot dead in their home. local and federal authorities eventually focused on eric williams , the former justice of the peace. last year, williams was convicted of stealing county computers. the d.a.'s office vigorously prosecuted him.
>> when he was convicted and became a convicted felon , he lost his job as justice of the peace, now has his bar license suspended, no way to make a living. his wife is not working. his whole world is falling apart and that's the motive in this case.
>> williams was arrested late last week charged with making a terrorist threat after police say they traced a threatening e-mail back to him. investigators searched a storage unit linked to him and found multiple weapons and a car matching the description of one seen near the d.a. murder scene. in an interview with kxas earlier this month, williams denied involvement with any of the murders.
>> you would never kill somebody in cold blood like this?
>> no, absolutely not.
>> now according to her arrest affidavit, kim williams says her husband pulled the trigger and confessed to her involvement. although so far investigators aren't saying what her role was and they have not charged her husband with murder.
>> and we should learn more about the arrest and those additional charges that are expected to be filed later on today when law enforcement officials are expected to hold a