Twisted killer Richard Kenneth Djerf, 55, has been executed more than 30 years after the brutal murders of four members of the same family in which he tied them up and tortured them View 4 Images Djerf was executed on Friday (Image: AP)

A sick killer enjoyed a double cheeseburger before being put to death for the brutal murders of four members of the same family. Richard Kenneth Djerf, 55, was executed by lethal injection on Friday in Arizona in the US after spending 30 years on death row. ‌

He was jailed for the murders of Albert Luna Sr., his wife Patricia Luna and their two children Rochelle, 18, and Damien, five, in 1993. He raped Rochelle at knife point before asking Patricia: "Do you want to watch your kid die, or do you want your kid to watch you die?" ‌

Djerf’s

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