Cellphone video shows the race to save lives in the Bronx today. You can see a first responder carrying what appears to be a teenage girl, clearly injured, rushing her away from the Mount Eden subway station this afternoon. She was one of six people shot when gunfire erupted on the train.

I was on the train just standing there, and I heard six of them.

Six of? Gunshot.

And then I heard it, I just went downstairs. I heard one person screaming or something. There was like six, seven shots, like a whole clip empty.

Police say it started with a fight between two separate groups of teenagers while on board a northbound number 4 train. One, they say, pulled out a gun and started firing inside the train. When the train pulled into the station, the doors opened and more gunfire. Innocent victims caught in the mix.

People started running off the train onto the platform, and more shots were fired while on the platform. That's when and where our victims were shot.

When police got to the scene, they found six people with gunshot wounds, including a 14-year-old girl and a 15-year-old boy. A 34-year-old man had been killed. Witnesses saw a woman with a gunshot wound to her face.

The woman was blurring here, was blurring a lot of blood like this.

Police spent the evening hunting the gunman. They are viewing surveillance video from the platform now. Officials reassuring the public that what happened tonight was unusual and unacceptable.

When detectives make an arrest, and notice I said when, because I'm very confident they will, there must be swift, immediate, strong consequences.

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