Who is Akayed Ullah?

The NYPD identified the suspect in the New York City subway bombing as Akayed Ullah. The immigrant from Bangladesh lives in Brooklyn. He has been in the United States for about seven years. Police said that Ullah was wearing what was described as a crude explosive device strapped to his body. It exploded while he walked in an underground passageway, police said. Police and federal agents came to a home in the Flatlands section of Brooklyn where neighbors said they have seen Ullah on a daily basis. But his family, in a statement, said he hasn't lived there in years.