More than 100 people are believed to have died from a batch of medical fentanyl that may have been contaminated, Argentina's ...

Outrage grew over the government’s slow response to the bacteria-infected supplies of the drug used in hospitals.

Argentina's drug regulator, Anmat, confirmed the presence of bacterial contamination both in samples taken from deceased ...

At least 87 people have died in Argentina after being administered bacteria-infected fentanyl in hospitals, a judge ...

Relatives of Daniel Sebastian Oviedo, from left, his father Daniel Oviedo, his mother Sandra Altamirano, and his sister Gisel Oviedo, embrace outside the Italiano hospital during a protest ...

On July 23, the Guilford County Narcotics Task Force, with help from the Danville Police Department, concluded a narcotics investigation.

LONDON—Fentanyl fueled the worst drug crisis the West has ever seen. Now, an even more dangerous drug is wreaking havoc faster than authorities can keep up.

A 59-year-old man from Auburn was sentenced to 11 years in federal prison on Tuesday for making and selling fentanyl pills.

A Stockton father was sentenced to 11 years in prison for the voluntary manslaughter of his daughter, who died from fentanyl exposure, according to the San Joaquin County District Attorney’s Office.

A Seattle man was convicted for fentanyl distribution and firearm possession, highlighting ongoing drug enforcement challenges.

A small puppy that was exposed to fentanyl and saved by firefighters is now in the care of Seattle Humane.

One man wanted, 10 others in custody for fentanyl and meth operation FBI touts Operation Summer Heat as a success.