The incident took place during a match between Orlando Pirates and Kaizer Chiefs in the Carling Black Label Cup.

JOHANNESBURG - Two people have been killed and several others injured during a stampede at FNB Stadium in Soweto on Saturday afternoon

The incident took place during a match between Orlando Pirates and Kaizer Chiefs in the Carling Black Label Cup.

Johannesburg Public Safety MMC Michael Sun says calm has been restored, and additional paramedics have been deployed to the scene.

“We understand the alleged cause of the stampede to be people trying to sell or present fake tickets at the gate, one thing to another, resulting in the stampede.”

"The city has been notified of two fatalities," said Luyanda Mfeka, the spokesman for the office of the mayor of Johannesburg.

He said the cause of the stampede, which took place at one of the gates of the stadium that hosted the 2010 World Cup final, was being investigated. Live television coverage of the match, which the Chiefs won 1-0, had shown no obvious disturbance.

In April 2001, a similar stampede saw 43 people crushed to death at Ellis Park, venue for the 1995 Rugby World Cup final, when Chiefs and Pirates met in a midweek league match.

It was the country's worst sporting tragedy and came as spectators broke through fences in an effort to get into the stadium.

Chiefs and Pirates are South Africa's best-supported clubs and have a rivalry stretching back almost 50 years.

Saturday’s match was a traditional pre-season friendly between the two clubs.