Andrew Blankstein

Ndiaga Diagne, 53, a Senegalese national and naturalized U.S. citizen, is suspected of killing two people and injuring 14 others after opening fire on patrons outside an Austin bar early Sunday.

Law enforcement is preparing to return Nancy Guthrie’s Arizona home to her family, sources say, as the search for her is in its fourth week

"TODAY" co-anchor Savannah Guthrie announces her family is offering a reward of up to $1 million for the recovery of her 84-year-old mother, Nancy Guthrie.

Savannah Guthrie has announced she and her family are offering up to $1 million for the return of their missing mother, Nancy Guthrie, whom authorities believe was taken from her home in the middle of the night over three weeks ago

Widely circulated images of a man on Nancy Guthrie's porch were not all taken the morning she disappeared from her Tucson-area home — one was captured earlier, two law enforcement sources familiar with the investigation said Monday.

A man fatally shot himself after his rental car, filled with weapons and explosive materials, breached the perimeter of a power facility in Nevada and crashed into a large cable spool, authorities said Friday.

Live updates: Authorities are searching for clues that may lead them to the person seen on Nancy Guthrie's Tucson, Arizona, porch the morning she went missing.

Nancy Guthrie, the 84-year-old mother of "TODAY" co-anchor Savannah Guthrie was last seen Jan. 31 when she was dropped off at her home in the Tucson, Arizona.

The desperate search for Nancy Guthrie, the mother of NBC’s “TODAY” show co-anchor Savannah Guthrie, is ongoing, with mounting questions about what happened to her and concerns for her physical health.

Live updates as investigators continue to search for Nancy Guthrie and her family appeal for her safe return.

Authorities investigating the disappearance of “TODAY” co-anchor Savannah Guthrie’s mother provided a timeline of the night she went missing as the search for her stretched into a fifth day.