(Reuters) - Two people were killed after floods triggered a landslide in North Carolina, as Alberto was downgraded to a post-tropical cyclone with diminished rainfall by the U.S. National Hurricane Center (NHC) on Thursday. Rescue workers found two bodies after being alerted late Wednesday that the landslide had destroyed a home in Boone, North Carolina, in the heart of the Blue Ridge Mountains, said Jeff Virginia, spokesman for Watauga County Emergency Management.