A Scranton man has been convicted of selling fentanyl that led to the death of a teenager, the U.S. Attorney’s Office for the Middle District of Pennsylvania announced.

Federico Rosario, 30, was a drug dealer in the city when in August 2021 he sold a mixture containing fentanyl and cocaine to a 17-year-old who ingested it and died shortly afterwards, he said US Attorney Gerard Karam. A jury also found him guilty of three additional sales of cocaine to the same victim in July 2021.

During his four-day trial, prosecutors presented testimony from 19 witnesses, including expert testimony from a medical examiner, a forensic toxicologist, two forensic chemists, a forensic cell phone examiner, a DNA expert and a expert in drug trafficking investigations.

Rosario faces up to life in prison with a mandatory minimum sentence of 20 years in prison.