.
"I just want to see the prosecutor ask for the death penalty. I want him to go through that process and to pay for what he did."
Ivy Stevens agreed: "I hope he makes a full recovery so he can be put through the justice system."
CCTV footage shows the moment Harrouff stormed out of a restaurant minutes before the attack Credit: CBS NEWS for cctv Harrouff's parents, Wade and Mina Harrouff, issued a statement expressing their condolences to the Stevens family and their apologies to Fisher "for the pain and suffering caused by Austin."
"There are no words we can offer to give any real comfort for this tragic loss," the statement says. "We love our son and know that he is not the person some are making him out to be."
Meanwhile, newly released cop radio transmissions have revealed deputies confronted chaos at the scene of the double killing.
When a dispatcher asks the first Martin County deputy on the scene if she has the suspect controlled, she responds, "No sir, I have this guy wrapped around him and he is biting him."
Sheriff Snyder has said it took numerous deputies, jolts from a stun gun and a dog to pry Harrouff off of John.
At one point during the struggle, a garbled transmission that sounds like "oh no" can be heard.
After Harrouff is finally subdued, the first deputy let out a plaintive sigh and then told dispatchers, "possible two sevens," the agency's code for dead people.
Another deputy then asks for paramedics and crime scene technicians, adding "we need them in here now."
They also directed that an ambulance be sent across the street to the home of Jeff Fisher.
South Florida has been hit by an epidemic of abuse of the Chinese-made designer drug which has caused disturbing behaviour and mental breakdown in many users.
Sheriff's deputies struggled to subdue the suspect at the Stevens family home in Tequesta, Florida Police say Harrouff was over Mr Stevens biting off chunks of flesh, while his wife was dead in the garage surrounded by 'multiple weapons of opportunity' used to kill them One user, with what police called "superhuman strength", was recently found kicking in the hurricane doors at the Fort Lauderdale Police Department.
Officials said Harrouff's parents were so worried by his behaviour after he stormed out of the restaurant that they called police and members of his college fraternity in a futile attempt to find him before the attack.
John Stevens ran a lawn business and his wife was the daughter of former North Miami Beach mayor Jeffrey Mishcon.
Neighbour Amy Lourie said the couple would often sit in the garage with the door open while watching television and wave and talk to passersby while their Labrador retriever played in the yard.
She said they would also drive around the neighbourhood in their golf buggy with the dog sitting with them. "It was the cutest thing" she said.
The gory double murder echoes the infamous "zombie" face-eater case in Miami in 2012.
Rudy Eugene, the "causeway face attacker", chomped a homeless man's face in a random attack while high on cannabis.
Sheriff William Snyder said he was baffled at the motive for the sickening rampage We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips @the-sun.co.uk or call 0207 782 4368