The coroner stated that Heemeyer used his .357-caliber handgun in the suicide.
In 16 cases coroners and other officials stated that a Taser was a secondary or contributory factor of death.
The coroner at the soldiers' inquest stated that the incident was due to "flawed application of procedures" rather than individual errors or "recklessness".
He had been sitting there, strangely undiscovered for a month, struck dead, so the coroner would state, by a blood clot in the coronary artery.
The coroner stated that he found indications that she had suffered from dementia.
However the coroner also stated, "None of the drugs or drug combinations were found to be at levels that were life-threatening in and of themselves."
"One man could have done it," stated the coroner.
The coroner also stated there was no evidence that Norton was a long-term user of heroin or other illicit drugs.
She died suddenly before she could testify, although the coroner stated that the cause was pneumonia, not foul play, The Times reported.
The coroner states that Morgan's diary contains no evidence in the matter of his death.