Yesterday Mr Abbas told Israel Army Radio that he condemned the killing of five members of the Fogel family in the West Bank last week.
The victims, Udi and Ruth Fogel, and three of their children, ages 11, 4 and 3 months, were stabbed to death at their home in Itamar near Nablus last Friday night.
Mr Abbas said: “This act was abominable, inhuman and immoral. Any person who has a sense of humanity would be pained and driven to tears by such sights.”