The child , who has not been identified , suffered fatal injuries after jumping from a second - story window in Dumont , New Jersey last month . A report into the incident has revealed he became angry after a classmate failed to say ' checkmate ' after beating him in a fight at recess . He then cried in a panic and wrote a note to his classmate , but told him to wait to open it ; the contents of the note have not been shared . An aide then saw the boy climbing on shelves and out a window . The boy 's classmate revealed that he had said on several occasions that he was going to jump from the window - but he thought he was joking .
The child , who has not been named , suffered fatal injuries after jumping from a second-story window in Dumont , New Jersey last month . A report into the incident has revealed he became angry after a classmate failed to say 'checkmate ' after beating him in a match at recess . He then cried in a corner and wrote a note to his opponent , but told him to wait to open it ; the contents of the note have not been shared . An aide then saw the boy climbing on shelves and out a window . The boy 's classmate revealed that he had said on several occasions that he was going to jump from the window - but he thought he was joking .