A search warrant filed for the home of Kaufman County District Attorney Mike McLelland and his wife Cynthia on Monday reveals more about what could have led to them being shot and killed Saturday.
The county also named a new interim district attorney. Brandi Fernandez was the first assistant district attorney under McLelland. His death forced the county to put Fernandez in charge.
She can only serve for 21 days. After that Governor Rick Perry will decide who gets the job permanently.
The search warrant reveals that the bodies of Mike and Cynthia were discovered by friends Saturday evening. Both had been shot multiple times and shell casings were scattered around the home.
Hours earlier one neighbor said he heard something in the middle of the night.
"Gun shots," Mike Griffith said. "I just knew it was a lot. And it sounded to me like an assault rifle."
This is the second attack against Kaufman County law enforcement in two months. Assistant District Attorney Mark Hasse was murdered in broad daylight just a block from the county courthouse in late January.
"It was just a shock for us. Disbelief," County Judge Bruce Wood said. "I really can't come up with one single word."
On Monday sheriff's deputies, Texas Rangers and the FBI re-opened an armory in Kaufman. It was their home base after Hasse's murder and it's where they hope this mystery will be solved.
Governor Rick Perry urged law enforcement all over the state to watch out.
"There is a clear concern to individuals who are in public life, particularly those who deal with some very mean and vicious individuals," Perry said.
Investigators are looking at several possibilities behind these cold-blooded killings.
One theory: in October four leaders of a white supremacist group were indicted for crimes including drug trafficking and murder. The agencies who helped--including Kaufman County--called it a "devastating blow" to the Aryan Brotherhood.
"You've heard people talking about 'in order to kill a snake you've got to cut its head off,'" FBI Special Agent Stephen L. Morris said. "That's what this team has done."
Then--two months later--the FBI released a warning that the group had issued orders to inflict "mass casualties or death" to law enforcement involved in the case.
On January 31st, the first guilty pleas were entered in that indictment. That same day, Hasse was murdered.
Investigators are also looking through cases that McLelland and Hasse worked on together, looking for people who might be holding a grudge.
Click here for the McLellands' funeral arrangements.
CBS Dallas reporter Anna Werner and KTVT reporter JD Miles contributed to this report.