Surveillance photos of a subject in the disappearance of Nancy Guthrie, “Today” show co-host Savannah Guthrie’s mother, were released Tuesday.

The FBI and the Pima County Sheriff’s Department posted the images to social media.

Two law enforcement sources told CBS News the man in the images is considered a subject that they are seeking to identify.

The person at this point is not considered a suspect or a person of interest, according to the sources.  

Savannah Guthrie has asked people across the country for help with the search, saying in a social media video Monday that the family believed Nancy Guthrie was “still out there” and they don’t know where.

“I’m coming on just to ask you, not just for your prayers but no matter where you are, even if you’re far from Tucson, if you see anything, if you hear anything, if there’s anything at all that seems strange to you, that you report to law enforcement,” Savannah Guthrie said. “We are at an hour of desperation, and we need your help.”

The latest deadline from an apparent ransom note that demanded payment in bitcoin passed Monday. An FBI spokesperson told CBS News on Monday that the bureau wasn’t aware of any continued communication between the Guthrie family and the suspected kidnappers.

“Someone has that one piece of information that can help us bring Nancy home,” the spokesperson said. “We need that person to share what they know. Please call us at 1-800-CALL-FBI.”