Subway attack witnesses recall seeing victims with gaping wounds and reveal horror aftermath of shooting

A WITNESS to the aftermath of the terrifying shooting inside a New York subway station says he was warned away from the mayhem by a bloodied victim staggering towards him.

Konrad Aderer, a Brooklyn-based documentary filmmaker, told The US Sun he missed being swept up in the violence at the 36th Street subway station in Sunset Park, , by a matter of moments on Tuesday morning.

The attack erupted at around 8.30 am when a suspect, reportedly wearing a gas mask and high-visibility vest, set off a smoke grenade and then opened fire at morning commuters on a Manhattan-bound N train.

At least 29 people were hospitalized with varying degrees of injuries, including 10 gunshot victims. The victims range in age from 17 to 49 and are all expected to survive.

The suspect has not yet been identified but remains at large. Police described the gunman as a black male, believed to be around 5ft 5in tall and weighing 170 pounds.

Aderer had been making his way down a flight of steps inside the station when he saw a victim of the shooting hobbling towards him, calling out to MTA staff that there were people hurt on the platform below.

"I saw this guy come up to the station booth, his pants were down and he was bleeding from both of his legs," Aderer told The US Sun.

"He was very animatedly telling the agent that there were people injured and bleeding on the platform. I thought I heard him say something about a shooting but I wasn't totally sure at the time."

Aderer said he felt incredibly concerned for the bleeding man. He considered hanging around to find out more and seeing if he could help out in any way, but ultimately he decided to "just get out."

"At that point, I decided I know as much as I needed to and there was no reason for me to be there a second longer," he said.

"I felt a lot of concern for the man, but thankfully - at least, I hope I'm right in saying - that he wasn't critically injured or anything, since he was able to make it up the steps.

"Part of me wanted to find out what happened and help but it just didn't seem wise," Aderer added. "I have a family and I just would have been risking myself and not really helping [by being there]."

Read our Brooklyn subway shooting live blog for the very latest news and updates...

As Aderer raced out of the subway station, he saw streams of police officers and other emergency personnel piling down the steps in the opposite direction.