Synthetic drug ‘flakka’ behind bizarre crimes in US

One man ran naked through a Florida neighbourhood, tried to have sex with a tree, and told police he was the mythical god Thor.

Another ran nude down a busy city street in broad daylight, convinced a pack of German shepherds was pursuing him.

Two others tried separately to break into the Fort Lauderdale Police Department. They said they thought people were chasing them; one wound up impaled on a fence.