TUCSON, Airzona — Cops investigating the disappearance of Savannah Guthrie’s mom Nancy searched a septic tank behind her house Sunday, with drone footage showing them opening a manhole cover in the backyard.

Three detectives were spotted sticking a long pole down the manhole behind the house, although no further information has been released on what they were looking for.

An official police vehicle was also spotted outside the residence at around 11 a.m. local time.

It comes as police restated that they have no suspects or persons of interest identified in the case.

The 84-year-old was last seen over a week ago after she was dropped off at her Tucson, Arizona, home by her daughter and son-in-law.

It comes as police restated that they have no suspects or persons of interest identified in the case.

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A ransom note, sent to several news outlets, demanded $6 million worth of bitcoin by Monday at 5 p.m. local time.

The letter, which has not been verified, also gave details about Nancy’s home.