Updated at 1:16 p.m.
Actor Leonard Nimoy, best known for his role as Mr. Spock, the logical half-Vulcan, half-human in the original Star Trek series and several movies, has died at his home in Los Angeles, his granddaughter, Madeleine, told NPR. Nimoy was 83.
The cause was end-stage chronic obstructive pulmonary disease, she said.
NPR's Neda Ulaby, who is reporting on the story, tells our Newscast unit: