PORTLAND, Ore. — A New Jersey man who sold fentanyl through dark web marketplaces and encrypted messaging platforms has been sentenced to more than 11 years in federal prison, federal prosecutors announced Tuesday.
Mark T. Eager, 34, of Kearny, New Jersey, was sentenced Friday to 135 months in prison followed by five years of supervised release after pleading guilty to conspiracy to distribute and possess with intent to distribute fentanyl.
According to court records, Eager and a co-conspirator operated an online drug trafficking operation between November 2023 and June 2024, selling fentanyl nationwide through dark web marketplaces and Telegram. Eager allegedly used the vendor name “WRSEH10” and marketed the drug as “China White Synthetic Heroin.”
Federal investigators traced the operation to residences in Kearny, where Homeland Security Investigations (HSI) agents executed search warrants in June 2024. Authorities seized more than 360 grams of powdered fentanyl, counterfeit M30 pills, drug ledgers, cell phones, computers, and packaging materials linked to shipments sent to Oregon.
“This defendant showed a blatant disregard for human life by trafficking fentanyl across the United States,” said U.S. Attorney Scott E. Bradford for the District of Oregon. “My office will continue to pursue those who profit from poisoning our communities, and we will use every available resource and partnership to combat fentanyl trafficking and keep Oregonians safe.”
Investigators said the case involved cooperation among multiple federal, state, and local agencies across the country. Homeland Security Investigations officials highlighted the role of agents from Portland, Newark, and Houston, along with the Portland Police Bureau and the High Intensity Drug Trafficking Area (HIDTA) Interdiction Task Force.
“This investigation brought together law enforcement agencies from across the nation,” said April Miller, acting special agent in charge of HSI Seattle. “His 11-year sentence sends a clear message: no matter where you are in the country or the world, if you attempt to sell narcotics online to Americans, we will find you.”
HSI Houston Special Agent in Charge Lucia Cabral-DeArmas said the investigation demonstrated the effectiveness of nationwide partnerships targeting synthetic opioid trafficking and transnational criminal organizations.
Officials in Newark also emphasized the digital nature of the investigation, noting that agents followed Eager’s online activities to dismantle what authorities described as an active fentanyl packaging operation. In addition to narcotics, investigators recovered cryptocurrency assets and electronic devices believed to be connected to the drug distribution network.
A federal grand jury in Portland indicted Eager on Sept. 4, 2024, on charges including conspiracy to distribute fentanyl and distribution of fentanyl. He pleaded guilty on Feb. 4, 2026.
The investigation was led by HSI Portland and HSI Houston, with assistance from HSI Newark, the Portland Police Bureau, and the HIDTA Interdiction Task Force. Assistant U.S. Attorney Scott Kerin prosecuted the case, while the U.S. Attorney’s Office in New Jersey assisted in securing and executing search warrants.
The case was also conducted under the Homeland Security Task Force initiative, a federal effort focused on disrupting criminal cartels, transnational criminal organizations, and trafficking networks operating in and beyond the United States.
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