U.S. student held in North Korea died of oxygen starved brain: coroner

(Reuters) - An American student who had been imprisoned in North Korea for 17 months died from lack of oxygen and blood to the brain, an Ohio coroner said on Wednesday.

Otto Warmbier’s death on June 19 was due to an unknown injury that occurred more than a year before his death, Hamilton County Coroner Dr. Lakshmi Sammarco said at a news conference.

“We don’t know what happened to him and that’s the bottom line,” Sammarco said.

Warmbier’s parents could not be reached for comment on the coroner’s report.

The University of Virginia student was held by North Korea from January 2016 until his release on June 15. Warmbier, 22, was returned to the United States in a coma.

The coroner and a Sept. 11 report by her office cited complications of chronic deficiency of oxygen and blood supply to the brain in Warmbier’s death. Only an external examination of the body rather than a full autopsy was conducted at the request of Warmbier’s family.

North Korea had blamed botulism and the ingestion of a sleeping pill for Otto Warmbier’s problems and dismissed torture claims.