On the evening of October 15, 1996, 28-year-old Hector Imperial Sr. was at home in Phoenix with his wife, Sandra Imperial, and their five-year-old son when 16-year-old Tonatihu Tony Aguilar arrived, reportedly because of a longstanding feud. The encounter escalated and Aguilar shot Hector to death; Sandra was also shot and died the following day. Their son, who witnessed the events, was physically unharmed.

Aguilar fled but was taken into custody by U.S. Customs Service officers at the El Paso Port of Entry on July 23, 1997, on outstanding warrants that included homicide, parole absconder, and fraud. He was extradited to Phoenix and later convicted; in January 2002 Aguilar received a natural life plus 35 years sentence for the murders.

Was anyone in the Phoenix area at the time aware of contact or conflicts between the Imperial family and Aguilar that could shed light on this feud?