A 24-year-old man was arrested earlier this month after a grand jury indicted him on second-degree murder charges connected to a fatal overdose.
Eric L. Williams Jr. sold methamphetamine to a person on May 6, Chattanooga police narcotics investigators allege.
The person died that same day, and the Hamilton County Medical Examiner's Office later confirmed the cause of death to be methamphetamine overdose.
That incident is not connected to the four fatal overdoses that took place between June 10 and 11, police spokeswoman Elisa Myzal confirmed.
When officers arrested Williams on June 7, they found other drugs in his possession.
Williams is charged with possession of heroin for resale, simple possession of marijuana, resisting arrest, and possession of drug paraphernalia. He was taken to the Hamilton County Jail where he is being held on a $75,000 bond, according to online jail records.
He is scheduled to appear in criminal court on June 21 on the second degree murder charge. He is due in general sessions court on July 7 for the other charges.