4. Gerardo Hernández was sentenced to two terms of life imprisonment plus 15 years in prison for conspiracy to commit a quadruple murder.
They face counts ranging from conspiracy to commit a terrorist act to murder and attempted murder.
Almost two years after fellow passengers flying aboard Northwest Airlines Flight 253 watched in panic and confusion as smoke and flames rose from Mr. Abdulmutallab's lap, he pleaded guilty to eight federal crimes, including conspiracy to commit an act of terrorism, attempted murder and attempted use of a weapon of mass destruction.
The former student is charged with conspiracy to commit an act of terrorism, attempted murder and attempted use of a weapon of mass destruction.
The defendants are charged with conspiracy to murder and conspiracy to "commit an act of violence likely to endanger the safety of an aircraft".
Mr. Spyropoulos, of Clifton, was being held on $1 million bail on charges of conspiracy to commit murder, attempted murder and unlawful possession of a weapon.
Two face charges of conspiracy to commit murder and attempted murder.
Sabrina Limon was arrested on charges of first-degree murder, conspiracy to commit murder and accessory to murder.
Last March, two 17-year-old boys were arrested in Twentynine Palms, Calif., for conspiracy to commit murder after a classmate told a parent, and the parent told the police, of overhearing plans to kill classmates.
Before the new indictment, Mr. Medunjanin had been charged with conspiracy to commit murder in a foreign country and receiving military training from a terrorist organization.
In 2010, Najibullah Zazi pleaded guilty to charges including conspiracy to use weapons of mass destruction, conspiracy to commit murder in a foreign country and providing material support for a terrorist organization.
