Postings in chatrooms by members of a paramilitary group connected to a 2020 anti-government plot to kidnap Michigan Gov. Gretchen Whitmer included instructions on how to make explosives, an FBI agent testified Wednesday.

Screenshots of excerpts from the 1971 counterculture book “The Anarchist Cookbook,” which contains instructions for making bombs and illicit drugs, among other things, were taken from the cellphone of a man who approached authorities with information about the Wolverine Watchmen militia, Special Agent Henrik Impola told a Jackson County Circuit Court jury.

“It’s an old book describing guerrilla warfare,” said Impola. “So, it’s used as a manual on how to train, how to build bombs, how to create booby traps. Basically, how to maim or harm people.”

Impola’s testimony came during the first day of the trial for Joe Morrison, Pete Musico and Paul Bellar. The three were members of the Wolverine Watchmen, a group that trained in Jackson County, about 80 miles west of Detroit.

They are not charged with directly participating in the kidnapping scheme involving Whitmer. Instead, they are accused of assisting others who did.