A Canadian incarcerated near Montreal, Jason Berry, is facing extradition to the US over charges that, from jail, he trafficked fentanyl all over the world.
According to the extradition request, the fentanyl sold by Berry caused the death of several Americans, as well as Canadians from overdoses.
Berry is serving a 12 year sentence for previous drug trafficking offences. According to the charges, he used a cellular phone that was smuggled into prison to run the operation, access the darknet, place orders in China, move around his Bitcoin from exchanges, receive Bitcoin from drug buyers and send it to sellers in China.
Berry is alleged to have had accomplices who took care of the shipments from China and out to drug buyers. You can read more at the Journal de Montreal here.