range. execution style. all this, led investigators to think that this could be an organized crime hit. >> rumors are sweeping the town. talk of mexican drug cartels and prison gangs. >> we are open to every avenue right now. >> reporter: nbc's channel five in dallas covered the case from the beginning and the reporter ken kaltoff was there for it all. >> mexican drug cartels were suspect immediately because he had been involved in drug cases over the years. >> reporter: and investigators also suspected another group. less publically known but very dangerous. the arian brotherhood of texas. a prison gang of white supremists. why was this a group that b-- group that may have done this? >> there were rumors that said that they may want to get even with people in law enforcement. >> reporter: get even because