(Portland, OR) -- A Mexican national who was illegally in the U.S. has been sentenced for selling fentanyl that resulted in the overdose death of a Portland teenager. Investigators started tracking the source of the fentanyl which led to 27-year-old Manuel Souza Espinoza. Investigators set up a buy and arrested Souza Espinoza. He had a thousand M30 Oxycodone made from fentanyl in his car along with an illegal handgun. Souza Espinoza was sentenced to 13 years in federal prison.