A police officer on Wednesday described how Johnny Borizov threatened to kill Jeffrey Kramer in April 2009 -- about 11 months before Kramer and two of his family members were fatally shot inside their Darien home.
The officer, Steve Muszynski, said Borizov was "in a rage" because Kramer tried to take back a car he had given to his daughter, Angela, who at the time lived with Borizov and their infant son in south suburban Countryside.
"He was screaming obscenities about being upset about the vehicle being towed," Muszynski testified. "He was threatening to '(expletive) kill people,' being Mr. Kramer and the tow-truck driver."
Muszynski said Borizov was handcuffed "for the safety of everybody at the scene" but continued to lunge and shout.
"He was swearing and telling (Angela Kramer) he was going to take away the baby," Muszynski testified.
Last week, Angela Kramer told jurors the car was a gift from her father, but he wanted to replace it with another vehicle because of mechanical problems. She said Borizov, who told police he spent money fixing the car, pushed her father twice and pulled out a large knife when he arrived with a flatbed trailer.
"He had my dad pinned up against the car," she said.
About a month after the confrontation, Kramer said, Borizov left bruises on her mother and grandmother at a family gathering. She said Borizov "forcefully buckled" their son into a baby carrier and then bumped into the women with the carrier as he "stormed out" of her grandmother's Darien apartment.
Prosecutors say Borizov, 31, of Willow Springs, enlisted gunman Jacob Nodarse to kill members of the Kramer family in March 2010 after the couple split up and began battling over custody of their son.
Nodarse, 26, formerly of Countryside, testified he fatally shot Jeffrey Kramer, his wife Lori, and their 20-year-old son Michael after entering their home through a window. Angela Kramer, who survived, hid in a closet and called 911.
Testimony in the triple-murder trial resumes Thursday. DuPage County prosecutors have said they could rest their case as early as Friday.