Two co-defendants of Najibullah Zazi, the 25-year-old who has admitted to planning suicide attacks on the New York City subway, have pleaded not guilty. Adis Medunjanin and Zarein Ahmedazy stand accused alongside Zazi, their former high-school classmate, of travelling to Pakistan in 2008 and learning bomb-making from al Qaeda. They are also charged with providing material support to al Qaeda. Zazi pleaded guilty this week and is cooperating with investigators.
