Officials said the boys had been receiving hospice care at their home before they died Tuesday.
Andrew and Garrett Stancombe were born April 10 to Michelle Van Horne and Kody Stancombe who already have a 22-month-old son together.
The couple decided against risking surgery to separate Andrew and Garrett, who were joined at the torso and shared a heart and liver.
The boys' funeral is set for Thursday evening, following visitation at the Rairigh-Bence Funeral Home in Indiana.
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