Two more people have been charged in a federal investigation into numerous drug overdoses in the Grand Forks area linked to powdered fentanyl, bringing the total number of defendants to five.

Two more people have been charged in a federal investigation into numerous drug overdoses in the Grand Forks area linked to powdered fentanyl, bringing the total number of defendants to five.

The first document with some details of the case was unsealed Friday involving Ryan Jensen, 20, of Grand Forks. He's charged with five counts, including conspiracy to possess with intent to distribute controlled substances resulting in serious bodily injury and death, and money laundering.

Jensen is one of four men charged for their roles in the deaths of two people who allegedly ingested a combination of substances that included fentanyl, a powerful synthetic drug that is often mixed with heroin. Authorities say the drugs were bought online from underground websites and distributed in North Dakota and Oregon.

The money laundering charge against Jensen, prosecutors say, involves numerous financial transactions using the Bitcoin virtual currency system, which was meant to conceal the drug trafficking operation.

Jensen's lawyer, Tyler Morrow, and federal prosecutors declined to comment on Monday.

Joshua Fulp, David Noye Jr. and Kain Schwandt pleaded not guilty earlier to the conspiracy resulting in injury and death charge, which carries a maximum penalty of life in prison without parole. They are scheduled for trial on April 28.

A fifth person charged in the investigation, Jameson Sele, pleaded guilty last week to a lesser charge of conspiracy to possess with intent to distribute a controlled substance. He's scheduled for sentencing on May 20. His lawyer, Bruce Quick, declined to comment.

Grand Forks police sent out a warning in January that they believed several overdoses were related to the use of powdered fentanyl, following the death of Bailey Henke, 18. Investigators also reopened the case of Evan Poitra, 19, of Grand Forks, who died of an apparent overdose.

One of the overdose deaths came from a combination of Xanax and fentanyl, court documents show.