Williams was discovered dead by family members inside his apartment in Brooklyn, New York last September.
A medical examiner later ruled that the 54-year-old had died as a result of an accidental overdose using drugs laced with fentanyl.
Now, according to The Guardian, a federal prosecutor has confirmed that four men were charged in connection to the death on Tuesday.
Of the four suspects, Irvin Cartagena – who was arrested in Puerto Rico – is charged with directly causing the actor’s death after surveillance footage appeared to show Cartagena dealing the deadly drugs to Williams.
“Michael K Williams, a prominent actor and producer, tragically overdosed in his New York City apartment from fentanyl-laced heroin,” stated US Attorney Damian Williams.
“Today, along with our law enforcement partners at the NYPD, we announce the arrests of members of a drug crew, including Irvin Cartagena, the man who we allege sold the deadly dose of drugs to Michael K Williams.” He continued, “This is a public health crisis. And it has to stop.”
The suspects reportedly continued to sell fentanyl-laced heroin during the daytime, despite knowing that Williams had died from their product.