Gerard Derbesy died of a heart attack on Wednesday.

JOHANNESBURG - Eyewitness News can confirm that the CEO of BP South Africa has died.

It's understood that Gerard Derbesy collapsed while playing tennis in Dainfern on Wednesday.

ER24's Vanessa Jackson says paramedics conducted CPR and rushed him to a nearby hospital where he died.

"He was warming up for tennis match when he collapsed on the court."