Elaine M. Zene, 65, of Woodridge, was walking into the grocery store at 13460 South Route 59 in the southwest suburbs Saturday afternoon.
Her ex-husband, Raymond T. Zene, 72, of Plainfield, later killed himself in his townhouse a few miles away in the 24000-block of Walnut Circle, according to the Will County Coroner's Office.
The coroner determined that Elaine M. Zene died of multiple gunshot wounds and that the ex-husband sustained a gunshot wound, ruling his death a suicide.
The shooting occurred at about 12:30 p.m. and soon after, police were called to Raymond Zene's house for a well-being check. As they approached, they heard a gunshot, police said.