India, April 4 -- The disappearance of Nancy Guthrie, an 84-year-old Arizona resident, continues to raise questions more than two months after she vanished from her home near Tucson. Investigators are still working to determine what happened on the night she disappeared, while recent media reports have placed renewed focus on how the investigation unfolded during its earliest hours.

According to reports published by various news outlets , some law enforcement sources have suggested that the case may initially have been treated as a missing-person search after investigators believed Guthrie might have wandered away from her home. The early assumption has since drawn scrutiny, particularly after evidence discovered at the residence raised ...