The latest mass killing in the U.S. happened at a suburban Chicago home, where a couple, their two children and three dogs were found fatally shot on Sunday evening. Officers were asked to check on the family at their home in Romeoville, about 30 miles (48 kilometers) southwest of Chicago after one member did not show for work that morning and phone calls went unanswered, police said.
Police have said without elaborating that the suspect, who died Wednesday after a fiery crash in Oklahoma, had a relationship with the victims. Investigators believe they know the suspect's motive but have not disclosed it.
