Hawaiian Gardens Man Convicted for Selling Fatal Fentanyl Dose on OfferUp

Gregory Hevener faces a minimum of 20 years in prison after selling fentanyl disguised as heroin to an 18-year-old who overdosed.

Hevener used OfferUp to advertise fentanyl as 'black tar roofing materials.'
The victim, believing he was buying heroin, died after ingesting the fentanyl.
Authorities seized drugs and paraphernalia from Hevener's residence in multiple searches.
OfferUp and Craigslist have since tightened regulations to curb illegal drug sales.
Hevener's sentencing is scheduled for September 16, with a potential life sentence.