LOWELL, MA: -- The deadly heroin linked to four fatal overdoses in the city in the past month was mixed with a high percentage of pure opium, Massachusetts State Police crime lab tests revealed yesterday.
"This is really startling and very concerning," said Lowell police Capt. Robert DeMoura, adding that, as far as he knows, this lethal mix has not been seen in the city in the past. Source.
Maybe it's a pilot of the new Afghan heroin the European experts warned about, see above.