Ahmad Khan Rahami, the man wanted for questioning in connection with the attacks in New York and New Jersey, is in custody, CNN reported.

He was caught in Linden, New Jersey, after a shootout that injured a policeman, authorities say.

The dramatic arrest of Rahami came after the police issued a cellphone alert to millions of residents in the area telling them to be on the lookout for the suspect, who was described as 'armed and dangerous', the New York Times reported.

Rahami, 28, was identified on surveillance video near the locations of both the bomb that exploded in Chelsea and another device that did not detonate a few blocks away.

He was described as a naturalised citizen of Afghan descent who had been living with his family in Elizabeth, New Jersey.

IMAGE: Ahmad Khan Rahami, Photograph: Reuters