A Bangladeshi immigrant whose homemade bomb left him burned when it exploded in the New York City subway pleaded not guilty to terrorism charges on January 11. Authorities believe Akayed Ullah, 27, began to self-radicalize three years ago. He lived in New York with a green card after coming to the United States in 2011. The bomb detonated December 11 in a corridor linking the subway to the Port Authority bus terminal. No one else was seriously hurt. Ullah built it from a pipe, a 9-volt battery and Christmas lights, and packed it with metal screws, from instructions on the Internet, authorities said. Charges include using a weapon of mass destruction, providing material support to ISIS and bombing a place of public use. He faces up to life in prison. Prosecutors said that while hospitalized, Ullah told the FBI, “I did it for the Islamic State.”