Pinal County Attorney

Pinal County Attorney

Joseph Terrigino, 52 of Kentucky, was arraigned in Pinal County Superior Court on Friday, April 11, for the Oct. 1988 murder of Diane McQuiston, 40, at the time of her death.

According to a press release from the Apache Junction Police Department, police responded to a call from a water company employee reporting his discovery of the decedent, later identified as McQuiston, on October 7, 1988 in the200 block of South Main Drive, in Apache Junction, AZ.

The autopsy report completed by the then Pinal County Medical Examiner determined cause of death was due to multiple gunshot wounds.

Additionally reported in the AJPD press release, “numerous leads were developed and follow up interviews conducted; however the case lacked significant lead information and went unsolved for many years.”

In Nov. 2013, the Apache Junction Police Department Cold Case Unit, comprised of retired law enforcement volunteers, and the Pinal County Attorney’s Office Cold Case Deputy County Attorney began reviewing the decades-old homicide. Due to the successful investigation from the officers, both past and present, and presentment of evidence to the Pinal County Grand Jury an indictment was filed and arrest warrant issued for Terrigino on February 26, 2014.

Terrigino was arraigned in Pinal County on Friday morning and faces one count of Second Degree Murder, without premeditation, a class 1 felony.

Pinal County Attorney Lando Voyles stated, “No murder is too old to seek justice. Due to the hard work of law enforcement and my attorneys, a case too long forgotten will now begin to move forward in the pursuit of justice for the family of this victim.”

Joseph Terrigino is presumed innocent until and unless proven guilty.

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