Federal investigators have arrested a man they believe could be an aspiring terrorist. Wesley Gilreath, 29, was arrested for possession of child pornography while federal agents investigated his alleged materials that could have been the basis of a terror attack.

The FBI says Gilreath posted “hunting guides” online about violently targeting Jews, Muslims and refugees. Evidence suggests Gilreath could be a white supremacist, according to court records.

“I was asleep and I heard ‘FBI, open up,’” Gilreath’s neighbor said.

Read more: KDVR