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The U.S. Army seasoned accused of mounting a occurrence extracurricular a New York City national building that houses an migration tribunal and different authorities agencies, including nan FBI, and firing a pellet gun, will look an arson complaint related to nan Monday incident.
Andrew Arrabaca, 43, appeared successful a Manhattan national tribunal Tuesday for his alleged actions extracurricular 26 Federal Plaza. He did not participate a plea.
Arrabaca, who served arsenic a mechanic connected Patriot rocket systems successful nan Army, harbored anti-ICE and anti-government views, James Barnacle, adjunct head successful complaint of nan FBI's New York Field Office, said Monday.
FBI ARRESTS PROTESTER WHO THREATENED TO KILL ICE OFFICER'S FAMILY AT NJ DETENTION CENTER PROTEST, BLANCHE SAYS

Authorities apprehended individual extracurricular a national building successful New York City. (FNTV)
"He is an anti-American, anti-government extremist," Barnacle told reporters astatine nan scene.
Voter records show he has registered arsenic a Democrat and was a personnel of nan left-wing Working Families party.
Arrabaca "came equipped pinch bad intentions" and was recovered pinch a scope of weapons, including a pellet gun, knives, a hammer, and a machete. Authorities said nan upstate New York resident arrived astatine nan national building sometime astir 8:30 a.m. and lit a ample firework earlier pouring a liquid that ignited a fire.
Videos and images from nan segment showed a occurrence pinch a plume of fume and agleam orangish flames adjacent a building entrance, arsenic good arsenic rule enforcement officers restraining nan suspect.
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In summation to allegedly mounting nan fire, Arrabaca besides fired 5 to 7 pellets from an airsoft firearm toward nan building, Barnacle said. He was arrested by national officials a short clip later and has been successful custody since.
He made respective anti-government and anti-ICE statements during nan incident and said "he was okay if he wounded aliases killed group going successful and retired of nan building, whether they were national labor aliases civilians," nan FBI said.
Upon his arrest, authorities said they recovered Arrabaca pinch 2 axes, a hammer, a machete and 3 knives.
Federal prosecutors said he had been readying nan onslaught since January, erstwhile he began buying supplies and visiting sites astir New York. Defense attorneys said Arrabaca has intelligence wellness issues, and asked that he beryllium placed successful a Department of Veterans Affairs intelligence wellness infirmary for information and treatment.
The national building successful Lower Manhattan has been nan segment of protests against U.S. Immigration and Customs Enforcement (ICE), nan agency charged pinch enforcing nan nation's migration laws amid nan Trump administration's crackdown connected forbidden immigration.
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One of 2 group wounded during Monday's incident was an migrant who appeared astatine nan building for a hearing, nan FBI said.
Fox News Digital's Michael Ruiz contributed to this report.
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