Aaron Greene Update: NYC man pleads guilty in Greenwich Village explosives case, gets 7 years in prison

(CBS) NEW YORK - Aaron Greene, a man accused of plotting to blow up an iconic New York City structure, pleaded guilty to explosives possession charges and was sentenced to seven years in prison Tuesday, CBS New York reports.

Greene, 31, and his girlfriend Morgan Gliedman, 27, were arrested in December after a police search of their Greenwich Village apartment turned up papers titled "The Terrorist Encyclopedia" and "Deadly Homemade Weapons." Officials also found seven grams of hexamethylene triperoxide diamine (HMTD), a highly explosive ingredient used in bomb making, along with a cache of weapons.

Officials say the couple was plotting to blow up the Washington Square Park arch.

According to court papers, Gliedman told investigators that her boyfriend, Greene, suggested buying more guns. She said he was concerned that gun possession laws would be tightened in the wake of the Newtown school massacre.

Gliedman gave birth to her first child shortly after she was arrested in the bomb plot. Her attorney blames Greene for all her criminal troubles and her relapse into drug use, the station reports. Her case is pending.

According to the station, Gliedman is free on bail and she and her 7-month-old daughter Melody are living with her parents. She has reportedly been fighting in family court to keep Greene and his family away from the baby.

Gliedman is the daughter of a prominent real estate agent and top-rated New York oncologist.

Complete coverage of the Greenwich Village explosives case on Crimesider