A Rock Island man was sentenced Wednesday to 12 years in federal prison after admitting that he sold heroin to a Davenport woman, who overdosed and died in March 2015.

Anthony James Johnson, 52, must serve three years of supervised release once he completes his prison sentence. There is no parole in the federal system.

He pleaded guilty in March in U.S. District Court, Rock Island, to distribution of heroin. Johnson initially faced the more serious charge of distribution of heroin causing death.

According to police:

At 8:54 p.m. April 1, 2015, police, firefighters and Medic EMS responded to a home in the 100 block of East Rusholme Street after receiving a report of a woman, later identified as Eugenia H. Ensley, 32, who had died.

During a search of the home, detectives found a small amount of heroin and two syringes that appeared to have been used recently.

Detectives also determined the woman's heroin supplier was Johnson.

Later that night, officers with the department's Tactical Operations Bureau used a confidential source to make a controlled buy of 0.7 grams of heroin from Johnson at a location in Davenport.

The substance sold to the informant tested positive for heroin.

After the controlled buy, detectives followed Johnson and initiated a traffic stop. Detectives searched Johnson and found four bags of heroin weighing 1.85 grams in his mouth.

They also located "buy fund money" next to Johnson inside the vehicle.

During an interview with police, Johnson said he sold heroin and he sold it to the confidential informant. He also said he sold the woman a half gram of heroin for $100 prior to her death, according to police.

Johnson initially was charged in Scott County District Court with involuntary manslaughter, possession of heroin with intent to deliver and delivery of heroin. The charges were dismissed once he was charged in federal court.