Four killed in attack on government building in Egypt's Sinai

Militants attacked a government building underconstruction in Egypt's restive northern Sinai region on Saturday,killing at least four workers, a security source said.Six other workers were wounded in the attack, the source said.Egyptian security forces had cordoned off the area and launched amanhunt for the attackers.Witnesses said masked militants opened fire at the building nearal-Arish airport and set fire on two vehicles before they fled intothe desert. No group has yet claimed responsibility for the attack.