NEW YORK (CBSNewYork) – A suspect carrying a crudely-assembled improvised bomb is in custody following a blast in the underground walkway between Times Square and the Port Authority Bus Terminal Monday morning . The blast happened at around 7:20 a.m. during Monday morning rush hour . EXTRA: Video Captures Moment Of Blast Three other people suffered minor injuries that are not considered life-threatening. The other three transported themselves to area hospitals with symptoms like ringing in the ears, officials said. The suspect has been identified as Akayed Ullah, 27, who was wearing an improvised explosive device, Police Commissioner James O’Neill said. Akayed Ullah. (credit: Image via CBS2) Ullah is from Bangladesh and had been living in Brooklyn. He was injured when the device apparently went off prematurely and was rushed to Bellevue Hospital with non life-threatening injuries. He suffered burns to his hands and other lacerations. Anyone with any information about Ullah is asked to call authorities at 1-888-NYC-SAFE. The device was affixed to his body with velcro and zipties, according to O’Neill. A second device was found on the suspect, police said. Port Authority Police Officer Jack Collins held the suspect at gunpoint assisted by officers Sean Gallagher and Anthony Manfredi. The crudely-made device had wires protruding from it. A federal law enforcement official says the device malfunctioned — it did not fully detonate, according to the official. Authorities are investigating the attack as a possible “lone wolf” based on the rudimentary construction of the device. Check back soon for more on this developing story.