Authorities say they were called to the home in the 1300-block of Newport Street where the suspect, Gennadiy Plaksa, 44, of Palatine, hit his 44-year-old ex-girlfriend's daughter, Alina S. Rybnikova, 22, over the head with a baseball bat, then dragged Rybnikova to the garage and stabbed her multiple times, killing her.
"There was a lot of blood and indications of a struggle and a confrontation. This 22-year-old victim then was dragged down into the garage," said Mundelein Police Chief Ray Rose.
Then police say Plaksa handcuffed, stabbed and beat his ex-girlfriend.
"Mr. Plaksa had jumped on her from behind, surprised her, handcuffed her, bound her with tape and beat her as well, so from a period of about 9 o'clock to 1 o'clock in the morning, he had her subdued in the home," said Rose.
Plaksa eventually let the woman go free.Officers found Plaksa in a car near the home. He died of an apparent self inflicted gunshot.
At 1:37 a.m., police received a 911 call from a woman reporting her unconscious daughter lying in the garage, a release from police said.
The mother was taken to a hospital in Libertyville. Her injuries are not life-threatening.
Most neighbors slept through the attacks and awoke to an unfamiliar scene.
"It was kind of crazy, you know, when the police are ringing your doorbell at like, 4:00, 4:30 in the morning. You know, you just don't expect that kind of stuff. It doesn't go on around here," said Irina Shparber, neighbor. "It's a little scary."
"It's very surprising. They were very friendly people. We didn't hang out or knew them very well, but they always said hi, they were very polite. We were waking up this morning to cops banging on my door. It was kind of a shock," said Glaister Foreman, neighbor.
"It is crazy when the police are ringing your doorbell at 4:00 or 4:30 in the morning. You do not expect that stuff. That does not go on around here," said neighbor Kathi Macaluso.
The Sun-Times Media Wire contributed to this report.