article_snippet: Nick Mann, 35, was killed a man who suffered fatal head injuries as he tried to save his younger brother from an oncoming Tube train attempted to rescue Robert, 32, who is believed to have dropped a man who suffered fatal head injuries as he tried to save his younger brother from an oncoming Tube train mobile or wallet on to the line at Old Street station in London.
article_snippet: Nick Mann, 35, left, was killed a man who suffered fatal head injuries as he tried to save his younger brother from an oncoming Tube train attempted to rescue a man who suffered fatal head injuries as he tried to save his younger brother from an oncoming Tube train younger brother Robert, 32, right, who is believed to have dropped a man who suffered fatal head injuries as he tried to save his younger brother from an oncoming Tube train mobile or wallet on to the Tube line at Old Street station in London London .
highlights_snippet: Robert Mann, 32, jumped onto Old Street station Tube tracks on Sunday .
  
highlights_snippet: Robert Mann brother Nick, 35, tried to save him as Northern line train approached .
  