Dubai is 99 percent sure it's the Mossad. Plus, from what I heard on Public Radio Israelis think the Mossad is the best ever for pulling off this assassination. Apparently, many Israelis citizens don't think the rule of law applies to their country, but this is hardly surprising given that the UN and the U.S. basically look the other way when Israel steps crosses the line.
Turkey's FM: Saudi Arabia to deploy warplanes to Turkish base for fight against ISIS (DPA)
from the article: Will the Dubai hit increase Israel's global isolation?