If they 'knew' that Israeli fire was reposnsible for their deaths, what took them so long to release this information? Surely it would have been better propoganda to let the world know this immediately! Which of course leads us to believe that this is non conclusive and probably not the facts.
Israeli soldier lightly wounded after being hit by car south of Hebron (Haaretz)
from the article: Lebanese minister: Goldwasser, Regev were killed by IDF fire