There were no traces recorded in the city for the other three drugs tested – cannabis, methamphetamine and amphetamine.
Research last year from the Australian institute of health and welfare (AIHW) showed that while methamphetamine usage had remained stable since 2010, the proportion within that of users taking the crystal form - otherwise known as ice - had markedly increased.
"While the AIHW has shown a change in form of drug use, we've shown an increase in the proportion of people who inject drugs who are now using crystal methamphetamine".
The DEA report notes that almost all the methamphetamine on sale in the US was produced in Mexico, with seizures on the border nearly tripling between 2009 and 2013 to reach about 11,500kg.
A Native American who was addicted to methamphetamine and alcohol, her life seemed in a downward spiral in the months leading up to her death on 8 July 2014.
Accidental drug deaths involving methamphetamine jumped "significantly" from 2010 to 2011, according to a study by the national drug and alcohol research centre which also found ice usage has increased by more than 50% among injecting drug users.
Australia has one of the world's highest rates of methamphetamine usage.
The report by University of New South Wales (UNSW) researchers examined available data on drug-related deaths, hospital admissions, and treatment services, and also found that within methamphetamine related deaths, the drug was the underlying cause in 23%.
"We've also shown an increasing trend in the – albeit small – number who died with methamphetamine as a cause of their death".
The judge sentenced Flowers to a £400 fine – £200 each for two charges of possession of the Class A drugs cocaine and methamphetamine (crystal meth) – but no fine for possession of ketamine, a Class C drug.
One was a faction of the Milenio gang, a pioneer in methamphetamine trafficking, which fell apart after its leader, Óscar Nava Valencia, was captured in October 2009.
