Investigators are examining Nancy Guthrie's security gate and reports of suspicious activity in her neighborhood as the search for the missing woman continues 47 days after her suspected abduction.

The FBI has returned to Guthrie's neighborhood with new questions for residents, according to reports. Pima County investigators are simultaneously probing reports of suspicious activity near Guthrie's home.

The focus on the security gate represents a new investigative angle in the case. Authorities have not disclosed what specific evidence or information led them to examine the gate more closely.

DNA analysis is ongoing as part of the investigation, though officials have not released results or indicated whether any evidence has been recovered. The case remains active with multiple law enforcement agencies involved.

Guthrie's disappearance has prompted an extensive investigation involving federal and local authorities. No arrests have been announced in connection with the case.