India, Aug. 27 -- The Indian army's aviation wing on Wednesday landed a chopper on top of a crumbling building in Jammu, that was surrounded by floodwaters to rescue 22 Central Reserve Police Force (CRPF) personnel, three civilians and a canine, officials aware of the matter said adding that within an hour of the rescue, the building was swept away by the flood water.

The army in a statement said that it was a "high-risk helicopter rescue operation, in which army pilots landed their helicopter on a building that was already on the verge of a collapse."

CRPF officials said that on Tuesday evening, due to the flood in the nearby Lakhanpur barrage, most major components of the force's D/121 company along with controlled stores were shifted...