Nancy, the 84-year-old mother of US TV star Savannah Guthrie, remains missing after two weeks, with investigators conducting nighttime raids near her Reston, Virginia home. DNA evidence found at her residence that doesn't belong to her or those close to her is currently being tested, whilst authorities have received more than 30,000 tip-offs. Police continue to treat the case as if she is still alive, following up on thousands of leads in the ongoing search.