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Autopsies scheduled on 4 found dead near Chicago

STORY HIGHLIGHTS
  • Man, a woman, two boys found dead in Addison, Illinois, home
  • Preliminary investigation indicates the incident was isolated, coroner says
  • Investigators found shell casings near the bodies; cause of death still probed
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Chicago, Illinois (CNN) -- A coroner's office plans to conduct autopsies Thursday on four people who were found dead in a home in suburban Chicago.

A man, a woman and two boys were found dead Wednesday in a house in Addison, Illinois, just west of Chicago, according to a statement from the DuPage County Coroner's Office.

CNN affiliate WGN identified the four as 48-year-old Thomas Mangiantini, his wife Elizabeth, 46, and the couple's two sons, Angelo and Tommy. The station said Mangiantini was a printer and a baseball coach in Addison.

A preliminary investigation indicates that the incident "is isolated to this address," and "resident(s) should not be alarmed that further acts of violence will occur as a result of this incident," the coroner's office said in a statement.

Investigators found shell casings near the bodies, Addison Police Chief Tim Hayden said Wednesday, but the cause of death was still under investigation, WGN reported.

Police received a 911 call from a woman at 6:30 a.m. Wednesday, WGN said. When officers arrived they found a female dead downstairs and the bodies of three males upstairs, according to WGN.

The Mangiantinis put out their Christmas decorations the day before they were found dead, the station reported.