Fearing he was turning into a zombie, police say Perry punched and kicked his friend, using an electric guitar, a microwave and kitchen knives to kill him.
"I do think that his story, his reason behind this is true. He genuinely felt like his friend was changing into a zombie in his inebriated state," Sgt. Moses Marquez of the Grants Police Department told KOB-TV.
Perry then allegedly ran around the apartment complex threatening people with a knife. That's why the original 911 call was placed.
The small-town murder has since made national and international headlines for the sheer oddity of Perry's zombie defense.
Perry is being held at Cibola County Detention Center on the murder charge.
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The Walking Dead Season 5 Trailer
THE WALKING DEAD (episode 5) American Movie Classics production with Andrew Lincoln
The battle begins tonight at 9|8c. #TheWalkingDead http://t.co/csLIjb5HUq
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Watching #thewalkingdead again is like drinking again. After rehab. I'm guessing. @WalkingDead_AMC http://t.co/3v6bBJwJR6
The Walking Dead was amazing tonight! Glad to see Morgan.. For the most part :) Gotta love her! @WalkingDead_AMC http://t.co/caNKXjrP5P
WATCH: The Walking Dead season 5 premiere's first 4 minutes...OMG! Terrifying! http://t.co/rSRZ6G7SQE #TWD http://t.co/uoeQ9vnZLM
57 THE WALKING DEAD images! http://t.co/E1UNCSrSCb http://t.co/oEk2UBeAl1
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NEW YORK, NY - OCTOBER 11: Melissa McBride, Steven Yeun, Lauren Cohan, Danai Gurira and Norman Reedus attend the 2nd Annual Paleyfest New York Presents: 'The Walking Dead' at Paley Center For Media on October 11, 2014 in New York, New York. (Photo by Randy Brooke/WireImage)
NEW YORK, NY - OCTOBER 11: Scott M. Gimple, Robert Kirkman, Gale Anne Hurd and Greg Nicotero speak at 'The Walking Dead' NY Comic Con Panel on October 11, 2014 in New York City. (Photo by Robin Marchant/Getty Images for AMC)