CHICAGO HEIGHTS (CBS) — State officials were investigating the death of a 3-month-old boy who died early Friday from blunt force trauma.

Aaron Sweatt, of the 200 block of Arcadia Street in Park Forest, was found unresponsive at 1630 Ashland Av. in Chicago Heights late Thursday night. He was taken to Advocate Hope Children’s Hospital in Oak Lawn, where he was pronounced dead at 12:17 a.m. on Friday.

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An autopsy performed on Saturday determined Aaron died of multiple injuries and blunt force trauma from child abuse. His death was ruled a homicide.

The Illinois Department of Children and Family Services was investigating Aaron’s parents, following an allegation of child abuse, agency spokesman Jimmie Whitelow said on Friday.

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DCFS has had no prior contact with the family, Whitelow said. Another child in the home was placed in the care of relatives.

Chicago Heights police could not be reached for comment on Saturday and it was unclear whether the boy’s parents were in custody.

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(The Sun-Times Media Wire contributed to this report.)