Kristoff s death was preventable and the Berkshire District Attorney s office is seeking justice, District Attorney Andrea Harrington said at a press conference outside Superior Court after the arraignment. No child should die because a caregiver failed to provide basic medical care. . I want to thank the grand jury for their careful deliberations in returning indictments on these charges. The Tuckers, both 37 years old, pleaded not guilty and were released on personal recognizance with conditions that they follow requirements set by the Department of Children and Families. Kristoff was found deceased in his crib on the morning of Feb. 18 and pronounced dead at the scene. An autopsy performed by the Office of the Chief Medical Examiner determined that he died from complications of a streptococcus infection and pneumonia, resulting in a buildup of pus in the infant s pleural cavity, the membrane lining the lungs.