Sheriff Chris Nanos leads Nancy Guthrie investigation with 50 years law enforcement experience. The Pima County sheriff's career spans violent crimes to drugs.

Sheriff Chris Nanos says a "number of leads" were received but no suspects identified. He also confirmed blood found on Guthrie's porch was hers.

Police issued a new update in the case involving Savannah Guthrie’s mother, addressing reports about possible suspects.

The 84-year-old mother of Today show cohost Savannah Guthrie went missing sometime on Saturday night and police are treating her disappearance as a crime.

"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."

Security camera footage from the night Savannah Guthrie’s mom, Nancy, went missing can’t be recovered because she didn’t pay for the subscription service. During Thursday’s press conference, Pima County Sheriff Chris Nanos revealed Guthrie’s doorbell camera disconnected around 1:47 a.m. on Sunday.

Chris Nanos says Nancy Guthrie is believed to be alive as the search enter fifth day. However, no suspects have been identified yet.