FBI releases new details about masked suspect in Nancy Guthrie disappearance

Video of suspect in Arizona spurs a surge of calls as the desert search near Tucson yields little evidence

The FBI released new details about the masked perpetrator suspected in the kidnapping of Nancy Guthrie, as investigators continue to review the more than 13,000 tips that have come in from the public.

The male suspect, who was pictured in video footage captured from the 84-year-old's home the night of her abduction, has an average build and is approximately 5'9"-5'10" tall, according to an FBI forensic analysis. He was seen with a black, 25-liter Ozark Trail Hiker Pack backpack.