By Chris Francescani
NEW YORK | Mon Dec 31, 2012 1:06pm EST
(Reuters) - Police arrested a New York City couple in their apartment on Saturday after authorities investigating a credit card theft found a highly explosive compound, bomb-making manuals, a sawed-off shotgun and ammunition, officials said on Monday.
Morgan Gliedman, 27, and Aaron Greene, 31, are being charged with two counts of suspicion of criminal possession of a weapon, for the shotgun, court documents show.
One sheaf of papers found in the apartment had a cover page that read "The Terrorist Encyclopedia," according to court documents.
At the apartment, detectives discovered a plastic bottle containing seven grams of Hexamethylene triperoxide diaminean, or HMTD, court documents show.