Situation. Leon homicide steps away from old town. Neighbors with concerns. And 7 on your side gets results. Relief for the family of a child with autism, next. Now, abc 7 news at 11 00, on your side. Leon up first, only on 7, a gruesome crime shaked metro riders on the fourth of july. Moments later, he turned to another man and robbed him. Now that victim is speaking exclusively with abc 7. Roz plater has what he is saying a new details about the suspect now in custody. Roz . Roz this is our first detailed account of what happened on the train in those terrifying moments. An account from somebody who was there and still shaken by what happened. I turned around and looked, and they were fighting each other. One was attacking the other pretty badly. Roz this man said he had just boarded the red line train saturday afternoon, minutes before the fatal stabbing. He said that he and other passengers watched in horror as a man with a knife attacked another young man. The guy was stabbing him