They asked the soldiers? Does that constitute an investigation? How about digging the bullets out of the dead and making a real determination. That's waht a legitimate investigation would do. We have seen verious IDF "self investigations" over the years. I don't even think they rouse themselves from their chairs during the course of the "investigation".
Three homemade bombs in Egypt's Alexandria wound two (AP)
from the article: Two Egyptian soldiers killed on Israel-Egypt border