WATCH LIVE: 3 injured, suspect arrested in Manhattan explosion (VIDEOS)

The blast reportedly took place at 42nd street and eighth avenue.Three subway lines are being evacuated as a result of the incident.

The suspect, who is understood to be in his 20s, sustained non-life threatening injuries during the explosion, the NYPD has said. The man was reportedly also in possession of a second device, which did not detonate.

Four people, including the suspect, suffered injuries during the blast, according to the New York Fire Department. None of the injuries are life-threatening.

Update: A total of 4 injuries reported at the scene of an explosion at Port Authority. All injuries are non-life-threatening

— FDNY (@FDNY) December 11, 2017

I'm with @NYPDONeill and @NYGovCuomo with an update on this morning's incident in Midtown. https://t.co/ehiI9LKEOu

— Bill de Blasio (@NYCMayor) December 11, 2017