Like the title says, if this report is true, it's as good as proof the Mossad wasn't involved in the killing. It is inconceivable that the Mossad would use the names of Israelis -- it is just asking for fingers to be pointed. Just as a disclaimer, if it was the Mossad, and they did use Israelis names, then it speaks of utter incompetence.
Saudi Arabia beheads four, marking 100th execution this year (DPA)
from the article: At least five Israelis 'share names with Dubai hit squad suspects'