ALBAWABA - Oxfam, a non-governmental organization, called for an international investigation into the killing of four water engineers in the Gaza Strip on Saturday's attack. Oxfam released a statement condemning the attack that killed four water engineers and workers from the Khuzaa municipality. It added that the Oxfam workers also used to collaborate with their strategic partner "the Coastal Municipalities Water Utility (CMWU)." Oxfam said: "The four men were killed ...