Latest: Suspect in subway blast moved to US from Bangladesh on preferential visa

Latest: The suspect was identified as 27-year-old Akayed Ullah.

Update 6pm: The 27-year-old man believed to have set off a pipe bomb in the New York City subway came to the US from Bangladesh seven years ago with a type of preferential visa for people with relatives who are US citizens or permanent residents, law enforcement officials have said.

Akayed Ullah was living in Brooklyn.