BUFFALO GROVE, Ill. (WTVO) — A suburban Chicago man killed his wife, two young children and mother inside their home last week before fatally stabbing himself, was banned from the home for drug use and bringing prostitutes to the house, court records revealed.

Officers found the two girls and three adults dead on Wednesday, November 30th at a multi-million dollar home in the Lake County village of Buffalo Grove. Police said the officers went to check on the family after the girls’ mother didn’t arrive for work.

Buffalo Grove Police Chief Brian Budds said evidence indicates 39-year-old Andrei Kisliak killed the others then himself.

Police identified the other victims as 4-year-old Amilia Kisliak; 6-year-old Vivian Kisliak; 36-year-old Vera Kisliak; and 67-year-old Lilia Kisliak. Autopsies determined they all died from “sharp force injuries” in the home, police said.

Lake County court records show that the family had been facing foreclosure on their home and that Andrei Kisliak had harassed and threatened his wife since they filed for divorce in July, the Chicago Sun-Times and Chicago Tribune reported. Buffalo Grove police had arrested Andrei Kisliak in September for violating a protection order obtained by his wife, but she agreed to let him move back into the home last month despite a judge’s warning against it.

According to FOX News, court documents revealed that Vera Kisliak alleged that her husband began using drugs and bringing prostitutes to the house.

She also told authorities that he had followed her as she took the children to school, stole her car, and threatened to kill her “and disfigure her in a way that no one will recognize her.”

“Our community is mourning, and I hope these findings help bring some closure as we continue to process this terrible tragedy,” Budds said in a statement.

The Associated Press contributed to this report.