Ahmad Khan Rahami, 28, is being sought for questioning about the explosion in New York City's Chelsea neighbourhood on Saturday, the FBI says.
Rahami is a US citizen born in Afghanistan. His last known address is in Elizabeth, New Jersey, just outside of New York City.
He's sought in connection with the Chelsea bombing that injured 29 people and prompted the discovery of a second device blocks away in Manhattan.
Authorities also discovered several explosive devices at the Elizabeth Train Station late Sunday night.