[UPDATE BELOW] An unidentified man was struck by a southbound N train at the 7th Avenue and 49th Street station around 12:30 p.m. today. The FDNY says he was rushed to Roosevelt Hospital in critical condition. We're hearing reports that the man may have been pushed, but the NYPD has not confirmed that... yet.

A spokesman for the NYPD would only say that the incident is still under investigation. At this time, N, Q, and R train service has been partially suspended, according to the MTA website. We'll update as more information becomes available.

Update 2 p.m.: Now a police spokesman tells City Room, “It’s looking more like he was pushed." The Post's sources are also saying he was pushed.

Update 2:43 p.m. An NYPD spokesman tells us that the still-unidentified man was pronounced DOA at Roosevelt Hospital. The spokesman also confirmed that he was pushed. No arrests have been made and the investigation is ongoing.

Update 2:55 p.m.: The FDNY also tells us that two witnesses were so traumatized by what they saw that they were also taken to Roosevelt Hospital.

Update 4:57 p.m.:
An NYPD spokesman describes the perpetrator as a black male in his 20s with short dreadlocks. He was wearing a white T-shirt with "some sort of" black cap. According to NYPD Commissioner Paul Browne, witnesses saw the suspect talking to himself before the incident. It's unclear if he knew the 58-year-old victim, but it appears that he did not.

“He gets into an argument and is pushing and shoving and at least one witness felt that the aggressor was emotionally disturbed,” Browne told reporters today. After he "exchanged words" with the older man, he shoved him onto the tracks. “As he attempted to climb out of the well, he was struck by the train and got wedged between the platform and the train car," Browne said.