BRUNSWICK, Ga. -- The prosecution rested on Day 6 of the Guy Heinze Jr trial.
Heinze, 26, is accused of killing his father, his uncle, his aunt, his cousins, and his cousin's boyfriend back in August 2009.
Before closing its case, the state called Ronald Parker, a former co-worker of Heinze's and several members of his slain family.
Shortly before the killings, Parker said Heinze was angry with his father. He said Heinze's dad was coming into some money and Heinze felt like he wasn't getting his fair share.
Parker said, "He said 'My daddy ain't never done nothing for me and my brother. Man, I'm going to kill him. I'm going to kill them all.'"
He said it wasn't the first time Heinze had made death threats toward his family. He said Heinze had also threatened his cousin Chrissy, suggesting a possible love triangle with his cousin and another woman.
Parker said Heinze told him "if they get together and don't let me in there, I'm going to break into that room and beat them to death."
Chrissy Toler is one of eight people Heinze is accused of killing. A medical examiner testified each victim had been beaten to death.
Monday, the prosecution started to hint around to a possible motive: greed, jealousy, a drug-induced rage. Parker was the only witness to testify that Heinze is capable of killing.
He said he told police, "I said don't let him go, because he's cleverer than what you think he is."
Heinze has pleaded not guilty to the charges. He faces the death penalty if convicted.