This raised my eyebrow:

[U.S. Attorney Karin] Immergut said a pledge by the defendants to never reveal each other’s identities to law-enforcement officials made the investigation more difficult. But investigators persuaded some alleged participants to act as informants, providing details of the crimes.

Your support powers solutions-focused climate reporting — keeping it free for everyone. All donations DOUBLED for a limited time. Give now in under 45 seconds.
Secure · Tax deductible · Takes 45 Seconds

Stories like this don’t tell themselves.

Make others like it possible. Your support powers solutions-focused climate reporting — keeping it free for everyone. Give now in under 45 seconds.
Secure · Tax deductible · Takes 45 Seconds

[40-year-old Arizona bookstore owner William C.] Rodgers, who also was identified by federal prosecutors as the mastermind of the 1998 arson at Vail, Colo., but was not charged in connection with that crime, committed suicide last month in an Arizona jail.

From the indictment, Rodgers appeared to be a key figure in the cell, allegedly involved in many of the most high-profile crimes.