Davis's text messages to a colleague predicting his victims' deaths formed part of the damning evidence, he said.
A police spokesman said he believed the victims' deaths were caused by carbon monoxide fumes on or near a bus.
He said there was a "very compelling case" to resume the inquest into the victims' deaths, in order to provide answers for the victims and their loved ones.
This wasn't an overdose epidemic, he realised, but dealers literally getting away with murder, making their victims' deaths look like just another accidental overdose.
"Hundreds have gathered around Neda Soltan's grave to mourn her death and other victims' deaths... police arrested some of them... dozens of riot police also arrived and are trying to disperse the crowd," one said.
The violence and vandalism at the Halabja memorial were the work of a local opposition group that has criticized the museum's depiction of the victims' deaths in the 1988 chemical weapons attack.
Police failed to follow up leads linking one of the 7 July bombers to a reported armed robbery weeks before the 2005 attacks, the inquests into the victims' deaths heard today.
These groups tend to be vulnerable targets for homicidal predators because the victims' deaths are more likely to go unnoticed and undetected.
In addition, Popular Mechanics noted that Walter's theory of the victims' deaths being caused by exhaustion is "pure bunk", as there are many long-term experiments that have safely tested humans' deprivation of REM sleep.
