The stampede took place at Gate J during a pre-season encounter between the two Soweto giants.
Two people have been confirmed dead, while 19 sustained minor injuries and one is said to be critically injured. This was after fans pushed the security guards at Gate J.
Jacques Grobbelaar, the chief executive officer of Stadium Management South Africa (SMSA), expressed his condolences to the families of all those who have been affected by the incident.
"We wish to express or condolences to the families of all those who are affected by the incident today," he said.
"This is extremely unfortunate as solid security plans were in place to ensure that this is a risk-free event. At kick-off, there was no reason to believe that the game needed to be delayed, given that the stadium was half full," he continued.
Pirates media officer Thandi Merafe posted the following statement from competition sponsors, Carling Black Label:
Herman Mashaba, the executive major of Johannesburg city, released the following statement:
Two residents have tragically lost their lives during a stampede at the Carling Black Label: Chiefs vs Pirates soccer match at FNB today. pic.twitter.com/bv0ftysXQE — Herman Mashaba (@HermanMashaba) July 29, 2017