Uniformed and plainclothes police officers stand outside a New York subway station after a man was killed after falling into the path of a train, Monday, Dec. 3, 2012. Transit officials say police are investigating whether he could have been pushed onto the tracks. (AP Photo/Mark Lennihan)

Uniformed and plainclothes police officers stand outside a New York subway station after a man was killed after falling into the path of a train, Monday, Dec. 3, 2012. Transit officials say police are investigating whether he could have been pushed onto the tracks. (AP Photo/Mark Lennihan)

This image released by NBC shows co-hosts Savannah Guthrie, left, and Matt Lauer, center, during an interview with freelance photographer R. Umar Abbasi on NBC News’ “Today” show, Wednesday, Dec. 5, 2012 in New York. On Monday, Abbasi took a photo of a man who was pushed onto a New York subway track and killed after being hit by a train. The New York Post published the photo on its front page Tuesday showing the man with his head turned toward the oncoming train. The headline read in part: “This man is about to die.” (AP Photo/NBC, Peter Kramer)

This image released by NBC shows co-hosts Savannah Guthrie, left, and Matt Lauer, center, during an interview with freelance photographer R. Umar Abbasi on NBC News’ “Today” show, Wednesday, Dec. 5, 2012 in New York. On Monday, Abbasi took a photo of a man who was pushed onto a New York subway track and killed after being hit by a train. The New York Post published the photo on its front page Tuesday showing the man with his head turned toward the oncoming train. The headline read in part: “This man is about to die.” (AP Photo/NBC, Peter Kramer)