She said that Hasse gave no specifics on why he felt threatened -- only that he did.
McLelland called Hasse "a stellar prosecutor" who knew that threats were part of the job.
He vowed after Hasse's slaying to put away the "scum" who killed his deputy.
"I hope that the people that did this are watching, because we're very confident that we're going to find you," McLelland told reporters.
"We're going to pull you out of whatever hole you're in, we're going to bring you back and let the people of Kaufman County prosecute you to the fullest extent of the law."