Repeat Drug Trafficking Offender Sentenced to More Than Ten Years in Federal Prison for Meth and Firearm Convictions
Caught with meth and a firearm after high-speed chase
SIOUX CITY, Iowa - A man who conspired to distribute meth and illegally possessed a firearm was sentenced to 131 months’ imprisonment, June 22, in federal court in Sioux City.
On February 2, 2026, Seann Mackey, 32, from Mount Pleasant, Iowa pled guilty, admitting that between June 2024 and December 2024, he was involved in a conspiracy that distributed at least 3000 grams of mixed methamphetamine which contained at least 150 grams of pure methamphetamine. On December 20, 2024, law enforcement apprehended Mackey after he led them on a high-speed chase, then attempted to flee on foot. During the foot pursuit, Mackey was observed throwing a firearm. Law enforcement seized methamphetamine, numerous empty baggies and a digital scale from Mackey, along with a loaded Glock 9mm handgun.
Mackey has several previous felony convictions, including: Delivery of a Controlled Substance, Possession of a Controlled Substance, Possession with Intent to Deliver a Controlled Substance – Methamphetamine, and Dominion/Control of Firearm/Offensive Weapon by Felon. Each of these convictions prohibit Mackey from possessing any firearm and also enhance his sentencing penalties.
This case is part of Project Safe Neighborhoods (PSN), a program bringing together all levels of law enforcement and the communities they serve to reduce violent crime and gun violence, and to make our neighborhoods safer for everyone. On May 26, 2021, the Department launched a violent crime reduction strategy strengthening PSN based on these core principles: fostering trust and legitimacy in our communities, supporting community-based organizations that help prevent violence from occurring in the first place, setting focused and strategic enforcement priorities, and measuring the results.
United States District Court Judge Leonard T. Strand sentenced Mackey to 131 months’ imprisonment and an eight-year term of supervised release. There is no parole in the federal system. Mackey remains in custody of the United States Marshal until he can be transported to a federal prison.
The case was investigated by Tri-State Drug Task Force based in Sioux City, Iowa, that consists of law enforcement personnel from the Drug Enforcement Administration; Sioux City, Iowa, Police Department; Homeland Security Investigations; Woodbury County Sheriff’s Office; South Sioux City, Nebraska, Police Department; Nebraska State Patrol; Iowa National Guard; Iowa Division of Narcotics Enforcement; United States Marshals Service; South Dakota Division of Criminal Investigation; and Woodbury County Attorney’s Office and was prosecuted by Assistant United States Attorney Shawn S. Wehde and .
