Richard Djerf, who killed four members of a Phoenix family more than 30 years ago, is scheduled to be executed at 10 a.m. Friday, Oct. 17, Arizona corrections officials announced Friday.

The execution by lethal injection will take place at the state prison in Florence. It would be Arizona's second use of the death penalty this year.

Djerf, 55, had pleaded guilty to four counts of murder in the killings of Albert Luna Sr., his wife Patricia and their 18-year-old daughter Rochelle and 5-year-old son Damien on Sept. 14, 1993.

A judge later sentenced Djerf to death.

Prosecutors say Djerf blamed another Luna family member, Albert Luna Jr., for an earlier theft of home electronic items at his apartment, became obsessed with revenge and months later entered the home under a ruse in which he claimed to be delivering flowers.

Djerf reiterated in a handwritten note he wasn’t going to seek relief from the state’s clemency board.

“If I can’t find reason to spare my life, what reason would anyone else have?” he wrote. “I hope my death brings some measure of peace.”

The Associated Press contributed to this report.