DEA aware of Mexican pharmacies selling fentanyl-laced pills for more than three years: report March 15, 2023 DEA was alerted of the news with the tragic death of California native Brennan Harrell in Cabo San Lucas in 2019. https://nypost.com/2023/03/15/dea-aware-of-mexican-pharmacies-selling-fentanyl-laced-pills-since-2019-report/