Updated

A woman who gave birth after her arrest and her boyfriend were facing weapons charges Monday after authorities said they found a substance used to make bombs and papers titled "The Terrorist Encyclopedia" in their Greenwich Village apartment.

Morgan Gliedman, the 27-year-old daughter of a prominent New York City physician, and Aaron Greene, 31, were arrested on weapons-possession charges Saturday after officers with a search warrant discovered a plastic container with 7 grams of HMTD, a highly explosive white powder used in bomb making, police and prosecutors said.

Also found in the living room were numerous written items containing instructions on the manufacture of explosive materials and bombs, including a collection of pages that had a cover page entitled "The Terrorist Encyclopedia," court papers said.

According to the court papers, chemical precursors to HMTD also were found in the living room.

Greene was held without bail after he appeared in state court in Manhattan on Sunday. Gliedman, who was nine months pregnant when she was arrested, went into labor and gave birth to a baby girl. She was hospitalized and had not yet appeared in court. It was not clear who will represent her.

Authorities said both defendants had drug problems.

"The whole situation's sad," said attorney Lisa Pelosi, who represented Greene. She declined further comment. He is due back in court Friday.

Greene claimed he was a Harvard graduate, but the university was closed Monday and it was not immediately possible to determine whether he actually attended the school.

Police went to the apartment with a search warrant in a possible credit-card theft case on Saturday morning, and after an anonymous tip warning authorities of explosives inside the home. The picturesque Greenwich Village street was blocked off as officers searched the home.

Investigators also recovered a sawed-off shotgun, other explosive devices, a commercial replica of a grenade launcher and ammunition, police said.