Major developments in the Nancy Guthrie case came late Tuesday evening, with a person detained for questioning and a search warrant being executed at a home in Rio Rico, Arizona — which is about 60 miles south of Tucson near the Mexico border.

Despite the developments, authorities have still not been able to locate the mother of “Today” host Savannah Guthrie, a law enforcement source told CNN.

Here’s what we know:

Person detained: Law enforcement detained a subject for questioning, who was stopped during a traffic stop an hour’s drive south of Tucson, along the US border with Mexico. The detention is based on investigative leads, but the person has not been charged, a law enforcement official told CNN at the time. It’s not clear if the person is the same individual seen in surveillance footage released by the FBI earlier on Tuesday.
“Persons of interest”: Separately, FBI Director Kash Patel said the agency is looking at “persons of interest” in the case. He did not say who might be under suspicion, but said authorities were going through the process of elimination.
Search warrant: A search warrant is being executed at a home in Rio Rico. The road where the search is ongoing has been closed. A woman on the scene in Rio Rico told CNN that it was her home that was being searched. She said authorities were investigating her son-in-law, who she said was detained, but “he had nothing to do with (the case).” Authorities are also searching a car in Rio Rico.
Door cam footage: Earlier on Tuesday, the FBI released doorbell camera footage from outside Guthrie’s front door taken the night she disappeared, showing a masked, armed person. Engineers at Google, which owns the doorbell camera maker Nest, were able to recover data after several days.
Ongoing search: Sheriff’s deputies also canvassed the neighborhood of Annie Guthrie, one of Nancy Guthrie’s daughters, on Tuesday. Officers knocked on doors, asking residents whether they could look at their property. Nancy Guthrie was at Annie’s house for dinner the night before she was reported missing.