Pinder was convicted of the October 1988 slayings of Rex Tanner, 59, and June Flood, 48. In June 2001, he was sentenced to two consecutive life terms.
According to testimony at the August 2000 trial, Pinder killed the pair on Oct. 25, 1998 and blew up their bodies with explosives the following day.
At trial, Filomeno Valenchia Ruiz admitted complicity in the murders and named Pinder as the mastermind. Ruiz was sentenced to five years to life in prison.
In a post-conviction petition filed this year in 4th District Court, however, Pinder claims that new evidence would have swayed a jury at his 2000 trial. That evidence is testimony from two Utah State Prison inmates that Ruiz told them Pinder did not kill Tanner and Flood.
In court pleadings, defense attorneys Andrew Parnes and Brett Gold also call into question the veracity of other trial witnesses and point to inconsistencies in the criminal investigation.
But according to arguments filed by assistant attorney general Brett DelPorto, Pinder's petition does not meet the legal burden required from a convict seeking a new trial. Unlike a criminal trial where a defendant is presumed innocent until proven guilty, a petitioner in a post-conviction pleading must demonstrate new evidence would have swayed a jury.
Among other things, Pinder's petition focuses on new testimony that contradicts that of many other witnesses at trial. But citing the Utah Supreme Court ruling in Utah v. Boyd, DelPorto noted that the new witnesses had no personal knowledge of the murders.
Further, DelPorto argues that Pinder's claims don't constitute new evidence under Utah law because they were or could have been known at the time of trial.
"Pinder must proffer newly discovered evidence which, if true, would create a genuine issue of material fact. Pinder has not met this burden."