Live: New York Explosion Empties Port Authority; Suspect Is in Custody

A peaceful beginning to the workweek was shattered Monday after an explosion rattled through one of the busiest transit hubs in New York City, causing the authorities to evacuate hundreds of commuters and throwing the morning into chaos.

The Police Department said that one person was in custody after the blast echoed through the passageway connecting the Times Square and Port Authority subway stations shortly before 7:30 a.m.

The suspect, identified by the police as Akayed Ullah, 27, an immigrant from Bangladesh who lived in Brooklyn, was in serious condition at Bellevue Hospital Center. The Fire Department said four injuries had been reported.

A senior city official who declined to be identified because of the continuing investigation said that Mr. Ullah had been wearing an explosive device and after the blast the police had to strip him to remove it.