The FBI described the suspect in Nancy Guthrie’s abduction as a 5-foot-9-inch man of average build who was wearing a black “Ozark Trail Hiker Pack” backpack.

The bureau identified the male suspect's height and backpack seen in previously released photos

The FBI announced on Thursday that it would increase the reward to $100,000 for information leading to the location of Nancy Guthrie or to the arrest and conviction of anyone involved in her disappearance.

The FBI has put out six surveillance photos and two videos of a potential suspect in the Tucson, Arizona, kidnapping of Nancy Guthrie, the 84-year-old mom of Today show co-anchor Savannah Guthrie.

Savannah Guthrie still has "hope" two weeks after mom Nancy Guthrie was "taken" and pleaded with a possible kidnapper "to do the right thing."

The search for Nancy Guthrie has passed the one-month mark as authorities continue searching for clues into the 84-year-old's mysterious disappearance

New details are coming to light in the ongoing search for Savannah Guthrie’s mother, Nancy Guthrie. According to a law enforcement source, the masked man suspected of abducting the 84-year-old may have been at her front door before February 1,

The majority of FBI agents assigned to investigate the disappearance of 84-year-old Nancy will head back to Phoenix, it's been claimed.

Pima County Sheriff Chris Nanos on Monday told NBC News that "investigators are definitely closer" in the search for Nancy Guthrie.