The unexplained shadow glides quickly through the stands during a game in Hernando Siles Stadium in La Paz, Bolivia, on Thursday night.It even appears to run straight through a barrier at speed.  The video, shot during a television broadcast of the match, has gone viral with internet sleuths sharing their theories on the apparition. This is not the first time an unexplained apparition has been spotted at a South American stadium.Some Venezuelans believe the 'ghost' of their deceased President Hugo Chaves was responsible for saving an otherwise certain goal during an international match against Colombia. A figure can be seen tapping the ball over the goal post.(dailymail.co.uk)ANN.Az