FIFA has issued a statement after a laser pen was pointed onto the pitch during Argentina's 1-0 win over Nigeria on Saturday.
A green beam shone in the direction of several players and Argentina coach Diego Maradona at Ellis Park as Argentina opened their World Cup campaign with a victory thanks to Gabriel Heinze's header.
FIFA requested that stadium officials investigate the incident and how such an item was allowed past security.
"We noticed this incident once and immediately asked the stadium security to look into the matter," read a FIFA statement. "According to the information that we have at this time, the incident only occurred once. Also at the time of writing, we have not received any comment from any of the teams."
Contrary to initial reports, the supporter responsible was not ejected from the stadium, but FIFA is satisfied that the incident was dealt with properly and have decided against conducting an investigation into the matter.
"Security perimeters are essential for any big competition and are important for the smooth process of security," FIFA's head of media Nicolas Maingot said. "That is functioning well. The laser was stopped immediately, it was used once during the game and we didn't see it any longer. We informed the relevant people in charge at the game and it was very quickly stopped."