India, Feb. 4 -- As the search in the Tucson area for Nancy Guthrie, the mother of NBC's TODAY show host Savannah Guthrie continues, Sheriff Chris Nanos of Pima County, Arizona held a press conference on the search operation Tuesday.

Sheriff Nanos took questions from the media and clarified details on the alleged abduction which took place on February 1. Nanos was asked by reporters that with 48 hours having passed since the disappearance, Nancy Guthrie has not been able to take a crucial medication without which she cannot survive "a single day".

"Is there any indication that Nancy Guthrie is still alive?" CBS reporter Jonathan Vigliotti asked Nanos. "We know the medication played a critical role here. It's been 48 hours. She needs it ...