Law enforcement and police are continuing to search for information about 84-year-old Nancy Guthrie, the mom of Today co-anchor Savannah Guthrie, who hasn't been seen since evening of Saturday, Jan. 31.

A ransom note demanding money in exchange for the return of 'Today' show host Savannah Guthrie's mother was 'carefully crafted' and included details not released to the public about her apparent abduction,

Savannah Guthrie's brother, Camron Guthrie, issued a plea Thursday for the return of their mother, Nancy Guthrie, saying in a video to the possible abductor, "We want to talk to you."

"We have nobody of interest, or anybody you would consider a prime suspect," Pima County Sheriff Chris Nanos told reporters. "We are just not there yet."

The morning show has beefed up police and private security presence at New York's 30 Rockefeller Plaza as a precautionary measure.