FLORENCE, AZ (AZFamily/AP) — A man has been put to death for the brutal murders of a Valley family as an act of revenge against his former coworker.

Richard Djerf, 55, died by lethal injection at a state prison facility in Florence on Friday morning. He was pronounced dead at 10:40 a.m.

When asked if he had any final words, Djerf replied, “I do not.”

“There are some crimes so unspeakable, so devoid of humanity, that justice demands the ultimate punishment. This is that case. Richard Djerf is a prime example of why the death penalty exists. What this man did in 1993, torturing and murdering nearly an entire family, was pure evil,” Maricopa County Attorney Rachel Mitchell said in a statement.

“Today was a day of final justice—not only for the memory of the four innocent lives he took, b

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