From the Herald Sun Newspaper in Australia:

"HOMICIDE squad detectives are investigating whether a mix of marijuana and mental illness was a factor in four murders in the past month.

Two young men and a couple who left behind a young child were the victims of fatal stabbings in the space of nine days.

It is suspected psychosis brought on by marijuana may have been a factor.

Drug counsellors have warned super-potent, genetically modified dope grown in suburban houses is severely affecting some users.

There are strong concerns among senior police at the links between cannabis-induced psychosis and killings and other violent crimes"

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