New Delhi, Feb. 13 -- The FBI on Friday released new identifying details about the suspect who kidnapped Nancy Guthrie, the mother of US television journalist Savannah, amid reports that an Arizona sheriff is blocking its access to key evidence.

The investigative agency also doubled its initial cash reward for information leading to a break in the case as the 84-year-old remains missing for the 13th day.

After the forensic analysis of doorbell camera footage at Nancy's Tucson home, the FBI has revealed several identifying factors about the masked abductor with a gun holstered to the front of his waist, who was seen on her doorstep.

In a post on X, the FBI's Phoenix office wrote: "New identifying details about the suspect in the kidnapp...