They say they found two rifles, bayonets, ammunition and body armor at his suburban home.
Clarkstown police say 49-year-old Lawrence Mulqueen of Nanuet was arraigned Thursday on charges of making terroristic threats, illegally possessing weapons and harassment.
Police were called Wednesday afternoon by Mulqueen's landlady, who said he'd been harassing her. They say she tipped them to Mulqueen's alleged threats, made on a Facebook page under a pseudonym.
Police say the FBI helped with the investigation.
A town court clerk says no lawyer is listed for Mulqueen in court records. He's being held until a court date Monday.
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