A Dunedin man punched, kicked and heel-stomped his victim before smashing him unconscious with a vodka bottle, a court has heard.
Lyndon Daryl Ralston, 40, and the 56-year-old man had been flatmates, the Dunedin District Court heard last week.
The defendant was in the kitchen of the Morningside home on September 7 last year, speaking to the victim who was on a couch a few metres away.
An argument was sparked and Ralston launched a "frenzied attack", which began with 15 punches to the man's head, Judge Kevin Phillips said.
Holding the flatmate down in a kneeling position, the defendant kicked him eight times before aiming a couple more punches to his head.
"The defendant raised his right foot up above the victim and heel-stomped [him] to his upper back near his spine," the police summary said.