India, April 9 -- Nancy Guthrie Case Latest Update: The disappearance of Nancy Guthrie has now crossed the 66-day mark, yet investigators say the case remains active and far from over. Authorities continue to examine new leads while reviewing earlier evidence, especially the events that may have unfolded during the first hours of her suspected kidnapping.

As the search enters its third month, detectives now believe a major mistake during the abduction may have changed everything. According to investigators, the people responsible may not have understood the serious medical risks faced by an elderly victim under extreme stress.

Nancy Guthrie Case Latest Update: Investigators Fear Critical Health Miscalculation

Detectives worki...