A coroner’s report on Otto Warmbier released Wednesday showed no signs of torture, contrary to claims his parents made Tuesday that he was severely injured after returning from imprisonment in North Korea and leaving questions unanswered about what he experienced while being held there.

The Hamilton County Coroner’s examination showed multiple small scars on Warmbier's body that had healed, as well as a scar where a tracheotomy tube was inserted, the Cincinnati Enquirer reported. Some of the scars seemed consistent with other medical treatment, or could have happened before he was imprisoned, the report stated.

The report also said his body was “well-nourished” and that his teeth were “original and well-formed,” the Enquirer reported, a difference from reports by his parents that his teeth looked like they had been crudely rearranged.

Warmbier went to North Korea on a youth trip and was arrested Jan. 2, 2016, in Pyongyang for stealing a poster from a hotel. He was tried, convicted, and sentenced to 15 years of hard labor.

He was released 15 months later in June, and North Korea said he had contracted botulism, taken a sleeping pill, and fallen into a coma.

According to the Enquirer, the coroner’s report found no botulism in Warmbier’s body and ruled that he died from lack of oxygen due to an unknown head injury that had happened more than a year earlier.

North Korea has denied torturing Warmbier and called itself a “victim” in the situation.

Warmbier’s parents declined to have an autopsy done after he died in June.

Many on Twitter were confused about the report but felt something must have happened to cause his condition and death while in North Korea.

Horrible what they did to him!!!💔💔💔 — Judy Poole (@jlpoole1) September 27, 2017

Looking at the returning man's condition and rapid death leaves no question as to the brutal and inhumane treatment he received. NK GUILTY — Pollington (@npclou) September 27, 2017