The city’s medical examiner ruled that his September 6 death was from accidental drug intoxication. A drug trafficking organization (DTO) has been selling fentanyl-laced heroin in Brooklyn’s Williamsburg neighborhood since August 2020, according to the criminal complaint. In a statement Wednesday, Damian Williams, the U.S. attorney for the Southern District of New York, referred to a “public health crisis” that “has to stop.”

The complaint said Irving Cartagena, 39, was identified as the person who did the drug transaction with Williams. Hector Robles, 57, Luis Cruz, 56, and Carlos Macci, 70, were also arrested and accused of being members of the DTO.

In early September “members of the DTO sold Michael K. Williams heroin, which was laced with fentanyl and a fentanyl analogue,” according to the complaint. It said that Williams died shortly after receiving the drug from Cartagena.

The U.S. attorney’s statement also includes several pictures that allegedly show Cartagena “executing the hand-to-hand transaction.” The pictures also appear to show several individuals allegedly involved in the DTO standing outside an apartment building near 224 South Third Street.

The U.S. attorney’s office said that Cartagena, Robles, Cruz and Macci “continued to sell fentanyl-laced heroin, in broad daylight, amidst residential apartment buildings, in Brooklyn and Manhattan,” even after knowing that the product they sold to Williams resulted in his death.

All four of the suspects have been charged with conspiracy to distribute fentanyl analogue, fentanyl and heroin. If convicted, each suspect faces a maximum sentence of 40 years in prison. Additionally, Cartagena has been charged with causing Williams’ death by selling him the fentanyl-laced heroin, which carries a maximum sentence of life in prison, if convicted.

“Michael K. Williams, a prominent actor and producer, tragically overdosed in his New York City apartment from fentanyl-laced heroin,” Williams, the U.S. attorney, said in his statement. “Deadly opioids like fentanyl and heroin don’t care about who you are or what you’ve accomplished. They just feed addiction and lead to tragedy. The Southern District of New York and our law enforcement partners will not give up. We will bring every tool to bear.”

Newsweek reached out to Williams’ office for further comment but did not receive a response in time for publication.