India, April 24 -- Nancy Guthrie, the 84-year-old mother of Today show host Savannah Guthrie has been missing since February 1. Police say she was likely taken from her home in Tucson, early that morning. Investigators have released doorbell camera footage showing a masked person, along with a description but no one has been arrested and no suspects have been officially named.

Now, a retired FBI agent is sharing his thoughts on what may have happened that night.

Jim Clemente, a former FBI agent and criminal profiler spoke with NewsNation reporter Brian Entin on Brian Entin Investigates about the case. After watching video from the scene, he focused on the blood spots found outside Nancy's front porch, some of which looked smeared.

His ...