A bomb has exploded on a Manhattan subway platform leaving four people injured in a suspected-Isil-inspired attack.
The suspected bomber is Akayed Ullah, a 27-year-old Bangladeshi national who is thought to have lived in the US for seven years.
Ullah, who lived in Brooklyn, was armed with a five-inch metal pipe bomb and battery pack as he walked through a midtown Manhattan transit hub, sources told the New York Post.
The device prematurely exploded which meant it only partially detonated in the right side of the suspect's jacket.
Ullah, who is thought to have been seriously injured in the attack, told officials he made the explosive device at the electrical company where he works, according to the New York Post.
The blast happened on Monday morning in an underpass at the Port Authority Bus Terminal near Times Square - the nation's most crowded bus station.
Ullah had burns and lacerations to his hands and abdomen, police said.
New York Mayor Bill De Blasio has described the incident as a "suspected terror attack".