Nancy Guthrie’s pacemaker stopped syncing with her Apple devices predawn Sunday, a report said Tuesday — as Arizona cops leading the case hastily called a press conference. The implanted medical device lost contact with the apple products belonging to NBC News  star Savannah Guthrie ’s 84-year-old mom around 2 a.m., a law enforcement source told Fox News. When authorities reached her Arizona home hours later around noon, Nancy’s phone and Apple Watch were still inside the house, the source said.