Iran did not and could not shoot down a drone of any kind. Iran is making a claim that is NOT true and is trying to make it self look stronger than it is. Iran is looking for trouble and should A: be ignored or even better, B: The U.N. and Israel should wipe it off the map. of course this is all my opinion.
Singapore arrests man who tried to join ISIS (Reuters)
from the article: U.S. says 'no indication' Iran shot down reconnaissance drone