Hundreds of new tips were received after Savannah Guthrie's family offered an increased reward for missing mom Nancy Guthrie's return. According to the Today show, the FBI received "more than 750 tips related to Nancy's disappearance" following Savannah's latest message about her mom's disappearance. Former FBI supervisor Jason Pack spoke with NBC News about what this renewed interest in the case means for Savannah, 54, and her family. "There are some people who are close to what happened who know what happened," he noted.