An army officer was killed and another was injured on Friday when a tunnel "suddenly" collapsed in North Sinai's Rafah, a military official said.
Security forces were inspecting a newly uncovered tunnel in the border area with Gaza Strip when the ground suddenly sank, resulting in the tunnel's collapse, the military official said.
Earlier this week, the army announced demolishing 22 news tunnels along the border strip in Rafah.
Egypt's cabinet issued a decision last October to clear 500 metres of the border area with Gaza of civilians, vowing to provide compensation for those evicted. The area was doubled to 1,000 meters in November, after discovering some tunnels in the Peninsula over 800 metres long.
Security forces have been targeting tunnels dug up in Sinai to connect it with Gaza. Egyptian authorities say the tunnels are used to smuggle arms to militants in the Peninsula.
