Photo: Investigators prepare to go inside the home where three people were found shot to death in Darien, Ill.
The invasion took place in Darien, a suburb about 20 miles outside of Chicago. Three family members, Jeff and Laurie Kramer and their 20-year-old son Michael, were found dead. Their daughter, who remains unidentified, was apparently the one who called 911 from the closet.
Officials said the shootings don't appear to be random and they don't believe the neighborhood is in danger.
CBS Chicago affiliate WBBM-TV said when police arrived they were able to find the terrified daughter in the closet and bring her out of the house safely. Police have not found the suspect yet.
"Three people were shot in that house, but nobody's saying why. It's concerning, but it could just be an isolated case," neighbor Aldo Costabile told WBBM-TV. "I'm not gonna worry about it. This is a great area. Police are doing a great job."
Darien and DuPage County police are investigating the home invasion. They plan to spend Tuesday afternoon going through the home for evidence and leads.