A white supremacist prison gang, a disgruntled former county official, a caller to tip line ....
All have surfaced in the wake of the slayings Saturday of Kaufman DA Mike McLelland and his wife, Cynthia.
Investigators haven't yet named anyone as actual suspects, and the tip line caller has been arrested for making a threat, not the killings.
But, while speculation swirls in the case, Gov. Rick Perry has added drug cartels to the mix.
"We know the drug cartels are very, very active in this country," Perry said Wednesday. "It goes back to the whole issue of border security and the failure of the federal government ... to expend the dollars necessary to secure the border with Mexico."
-- Bill Miller