DEA, Marion County warn of dangers of synthetic drugs mixed with fentanylINDIANAPOLIS (WISH) — The Drug Enforcement Administration and several Marion County agencies issued a public safety warning Monday about synthetic drugs mixed with fentanyl causing overdose deaths. The DEA Indianapolis District Office joined the Marion County Coroner’s Office, the Indianapolis Metropolitan Police Department and the Marion County Prosecutor’s Office to raise awareness of the growing danger. The warning follows a recent DEA advisory about fentanyl being mixed with substances such as xylazine, nitazenes, cychlorphine and medetomidine. Medetomidine, a powerful veterinary sedative, was found in nearly one out of every 14 confirmed drug overdose deaths in Marion County in 2026, according to coroner’s data. Marion County Prosecutor Ryan Mears said prosecution remains a key tool.