Idaho ISIS terrorist, 21, imprisoned for 18 years for plotting mass shooting in local churches

Alexander Mercurio, 21, was sentenced to 18 years in federal prison for plotting attacks on churches in Coeur d’Alene, Idaho, in the name of ISIS. The planned mass killings and arson were stopped after an FBI investigation led to his arrest in April 2024, the day before he intended to act.

Prosecutors said Mercurio planned to attack more than 21 churches, using firearms, knives, explosives and improvised flame weapons, and to detonate a homemade bomb when police arrived. He had discussed taking his father’s guns and sent an undercover FBI informant messages about the plan. After prison, he will remain on supervised release for the rest of his life.