Jose Rodriguez pleaded guilty on Tuesday for murdering Geraldina Peguero-Mancebo, along with her husband, Junior Cabrera-Colon, and their 1-year-old son, Jeydon.
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Police say it was all because of a jealous rage.
Rodriguez shot Geraldina before throwing the toddler into a muddy marsh and walking away, leaving him to die.
He killed her husband a day later.
Their bodies were found in a remote section of Ontelaunee Township in September 2025.