Ten Quad-Citians have been indicted on federal charges related to an ongoing marijuana investigation, including four Wednesday.

The alleged conspiracy centers around 34-year-old Aaron M. Lannoo of Moline and members of his immediate family and associates, Quad-City Metropolitan Enforcement Group director Kevin Winslow said.

Aaron Lannoo, Dylan J. Kenney, David Scott Herkert, Daniel J. Olds and Todd Richard Brown were arrested Oct. 25. Kelly Densberger was arrested Dec. 3.

Janet E. Lannoo, Dawn Serres, Cora Swanson, and Shawn Clifford Wulgaert were arrested Wednesday. Their addresses were not available.

Janet Lannoo is Aaron Lannoo’s mother, Winslow said.

Records state the conspiracy lasted from 2010 to October 2012.

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As part of the drug conspiracy, Aaron Lannoo and Serres also are charged with two counts of money laundering connected to the illegal transfer of homes at 725 25th St., Moline, and 1427 10th St., Moline, records state.

Aaron Lannoo is accused of being a leader in the conspiracy, Winslow said, adding he expects more arrests as the investigation continues.