India, June 24 -- A major update has emerged in the disappearance of 84-year-old Nancy Guthrie, as a retired FBI agent claimed investigators are closing in on the mysterious "porch guy" seen in the case.

Retired FBI Special Agent Maureen O'Connell, who served 25 years with the FBI before retiring in 2016, says federal investigators appear to be closing in on the man seen on the porch in the Nancy Guthrie case.

O'Connell revealed that her sources have told her that the FBI is very close to arresting the guy on the porch, she said during an interview with Megyn Kelly.

"I think they're close right now to pulling this case together, and that's what my sources are telling me," she revealed. "Things are happening."

Megyn asked O'Connell to ...