Ken Bensinger & Jessica Garrison:

In early March, federal prosecutors took the unusual step of securing an indictment against their own informant, accusing him of illegally buying a high-powered sniper rifle from a man he met at church and then reselling it for a profit. Robeson acquired the gun on Sept. 26, just 11 days before the FBI’s takedown in the kidnapping case.

Even before Robeson was indicted on the gun charge, prosecutors appear to have gone to some lengths to keep his involvement out of the kidnapping case’s public record. The original charging papers, for example, cite a different informant who attended a June gathering of militants in Dublin, Ohio, but make no reference to the fact that Robeson had helped organize the event or that he was in the meetings as well.

As part of their trial strategy, defense attorneys in the kidnapping case plan to call Robeson as a witness. They say he can shine a light on what the government did to drag targets into the alleged plot and on the FBI’s conduct overall.

If that happens, his testimony could put prosecutors in the unusual and awkward position of having to discredit their own confidential informant.

That case carried over many of the tactics that were successfully used against young, disaffected Muslims in cases that Chambers had helped bring, at times over the strenuous objections of defense lawyers.

In one instance, a 21-year-old man in Detroit was approached online by two undercover operatives pretending to be Muslim women looking for love, one of whom repeatedly attempted to convince him to consider martyring himself in an act of terrorism.

In a second investigation, three young Somali American men were contacted on Facebook and other platforms by a series of people posing as ISIS recruiters, converts to Islam, individuals in Somalia, and flirtatious women, among other personas. After nearly two years, one of the men agreed to travel to Somalia using money provided by an undercover agent and was arrested at the airport.

All the men eventually pleaded guilty and received lengthy prison sentences.