SEOUL—North Korea said on Friday the death of American university student Otto Warmbier soon after his return home in a comatose state was a mystery and dismissed accusations that he had died because of torture and beating during his captivity as “groundless.”
The North’s foreign ministry spokesman also said in comments carried by the official KCNA agency that Warmbier was “a victim of the policy of strategic patience” of former U.S. President Barack Obama whose government never requested his release.
“The fact that Warmbier died suddenly in less than a week just after his return to the U.S. in his normal state of health indicators is a mystery to us as well,” the spokesman was quoted by KCNA as saying.

Otto Frederick Warmbier (C), a University of Virginia student who was detained in North Korea since early January, is taken to North Korea's top court in Pyongyang, North Korea, in this photo released by Kyodo March 16, 2016. Kyodo/Reuters