Israeli Soldiers Killed in Border Clash with Egyptian Soldier

Three Israeli soldiers were killed after being shot by an Egyptian soldier near the border between Israel and Egypt.
Egypt has blamed the incident on a member of its security forces who was also killed.
Israel has launched an investigation into the deaths of the soldiers.
The Israel-Egypt border is typically calm but smugglers regularly attempt crossings.
Questions have been raised in Israeli media over how the assailant was able to cross the high barrier along the border.