Robert Doggart, 65, was convicted in US District Court in Chattanooga of solicitation to commit arson and violate civil rights, as well as of making a threat in interstate commerce, The Chattanoogan and other newspapers reported.
Prosecutors and attorneys for Doggart did not immediately respond to requests for comment.
Doggart was arrested by Federal Bureau of Investigation agents in April 2015 after telling a government informant in wire-tapped phone calls that he planned to recruit a militia and travel to Islamberg, about 145 miles northwest of New York City.
The group planned to burn down the community's mosque and shoot anyone who tried to stop them, according to the criminal complaint.
Defense attorneys argued in court that Doggart had exaggerated his intentions to attack Islamberg after being encouraged by the informant and that he never had a solid plan in place, the Chattanooga Times Free Press reported.
The attorneys also argued that Doggart, after watching Fox News reports, believed Islamberg residents were training for guerrilla warfare against the West, the newspaper reported.
Islamberg, started by a group of African-American Muslims who moved from US. cities in the 1970s, is a gated community with dirt roads and several dozen small homes near the town of Hancock in New York's Catskills Mountains.