
A Simi Valley man, Michael Thomas McDevitt, is facing charges of involuntary manslaughter following the overdose death of Karissa Robinson, who was found to have ingested fentanyl that McDevitt allegedly furnished, according to a recent Ventura County District Attorney's Office release. McDevitt, who was also charged with furnishing methamphetamine, entered a plea of not guilty at his arraignment.
Details provided by the authorities indicate that on September 14, 2021, Robinson visited McDevitt's residence; after she consumed the supplied fentanyl, she collapsed and subsequently never woke up, and despite being in apparent dire need of medical attention, McDevitt hesitated for several hours before attempting to deliver her to a Ventura County Fire station where, despite revival efforts, she was pronounced dead. This tragedy is set against the background of an escalating fentanyl crisis, with the Ventura County Medical Examiner citing 178 overdose fatalities out of 265 involving the drug in the past year.
The case, which highlights the stark and lethal realities of fentanyl use, is being prosecuted by Senior Deputy District Attorney Audry Nafziger of the Major Crimes Narcotics Unit, with McDevitt's court proceedings ongoing, the next step being an early disposition conference slated for September 23, 2024. Amidst these legal entanglements, McDevitt remains detained, bail set at $300,000. Venturing forward, the Ventura County DA's Office has expressed a commitment to aggressively prosecuting those involved in the distribution of fentanyl, a synthetic opioid estimated to be 50 to 100 times stronger than morphine and commonly linked to overdose deaths nationwide.
Amidst this legal confrontation and the larger societal battle against drug-related casualties, the Ventura County DA's Office encourages public education on fentanyl's perils and provides resources for addiction support and overdose rescue kits; such information is accessible via the DA's office website.









