Two Egyptian peace keepers have been killed by gunmen in Sudan's Darfur region. This has been reported by the Joint United Nations-African Union Mission . It says three other Egyptian soldiers were injured in an ambush near Edd Al Fursan, South Darfur. <br/> No group has so far claimed responsibility for the attack. More than 20 peacekeepers have been killed so far since the Mission was deployed in Darfur in 2008.<br/>