Warmbier died Monday, just days after he returned to the U.S., and his funeral was held in his hometown in Ohio Thursday.
North Korea on Friday called itself the "biggest victim" in the death of an American student who was detained for more than a year and died days after being released in a coma.
The agency did not provide further details on how Mr Warmbier was treated under detention or what might have caused him to lapse into a coma.
A handout for the funeral featured a photo of Warmbier posing next to his mother and included a quote from his salutatorian speech in 2013: "This is our season finale". But he was arrested in Pyongyang in January 2016 and, as we have reported, was accused of trying to steal a propaganda poster.
The comments published by the agency were North Korea's first reaction to Otto Warmbier's death in a US hospital Monday after it released him for what it called humanitarian reasons. Also in attendance was US Ambassador Joseph Yun, the special representative for North Korea policy, who helped secure Warmbier's release. "This is the end of one great show, but just the beginning to hundreds of new spin-offs".
Wyoming officials say the service for Otto Warmbier in the Wyoming High School auditorium will be open to the public Thursday, but not to news media.
Two months later, he was found guilty of committing "hostile acts" against the North Korean regime and sentenced to 15 years' hard labor in a trial that reportedly lasted about an hour.
Warmbier's North Korean trip was only supposed to be a five-day tour.
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One video showed Rouhani's security guards rushing him into his auto while others prevented protesters from approaching. Parliament speaker Ali Larijani was set to address the crowds before midday prayers.
President Donald Trump called the situation a "disgrace". Hunziker was detained in North Korea for months in 1996 for illegally crossing the border and committed suicide less than a month after he returned to the United States later that year.
"It would be easy at a moment like this to focus on all that we lost - future time that won't be spent with a warm, engaging, brilliant young man whose curiosity and enthusiasm for life knew no bounds", Fred and Cindy Warmbier said in a statement.
Rodman told ABC News he didn't know Warmbier was in a coma when he heard the news of his release. His doctors said he suffered extensive brain damage.
His treating physicians said he suffered from unresponsive wakefulness, a condition also known as persistent vegetative state.
Portman said sanctions against North Korea should be tightened, WVXU reports.
"This pattern of brain injury is usually seen as result of cardiopulmonary arrest where blood supply to the brain is inadequate for a period of time, resulting in the death of brain tissue", Dr. Daniel Kanter said last week.
"This college kid never should have been detained in the first place", said Portman, who previously revealed that he met secretly with North Korean officials in NY last December to press for Warmbier's release. Warmbier's family objected to an autopsy, so the Hamilton County coroner's office conducted only an external examination of his body and is still trying to determine his cause of death. "The North Koreans need to be held to accountable for that".
"Unfortunately, the very bad, torturous mistreatment our son received at the hands of the North Koreans ensured that no other outcome was possible beyond the sad one we experienced today", Warmbier's parents said in announcing their son's death Monday. But a statement from the coroner said, "There are additional medical records and imaging to review and people to interview".