This is a very serious matter since throwing things onto the pitch is not permissible. If it is jelly beans today, what of tomorrow? How about a football? or, cricket balls to confuse the batsman? or, oil-filled balloons? Even acid? There is no saying what the unscrupulous guys will do to hurt opponents just to win the game. So, ICC should take this prank seriously and severely punish the guilty. Else, the matter may spin out of control in future.