Last September, as two would-be kidnappers made their way to the vacation home of Michigan Gov. Gretchen Whitmer (D) for nighttime surveillance, the pair made a pit stop at a nearby highway bridge, according to prosecutors.

Then the two members of an extremist anti-government group, Adam Fox and Barry Croft, allegedly looked for the optimal spot to “mount an explosive charge” underneath — all so they could blow the bridge up to stall police trying to reach Whitmer’s home.

The kidnapping plot never came to fruition, as Fox, 40, Croft, 45, and other extremist group members were arrested and charged in October. Now, the pair and one other defendant, Daniel Harris, 23, face new charges, including conspiracy to use weapons of mass destruction and federal firearm violations, in the newly detailed scheme to explode the bridge.

Read more: Washington Post