Correctional Services said that “matters are under control” at Johannesburg’s Sun City Prison on Wed.
Tributes have streamed in from the music industry after the death of the Jabu Khanyile, the Afro-pop veteran.
South African musicians have lauded the influence and legacy of this maverick musician.
Yvonne Chaka Chaka said Khanyile will always be remembered for "being genuine".
"Jabu was very original. He was a Zulu man through and through. He respected his customs and traditions.
"Most of all he respected people. What he said is what you got."
Chaka Chaka said that she had shared stages with him locally and abroad.
"I really treasure the fact that I got to know the man. I will miss him deeply," she said.
"I want to send my heartfelt sympathy to his family and fans.
"Jabu was a very generous artist. We have done so many records for charity. I pray that his soul rests in peace."
Sipho Sithole said Jabu was "everything" to the Zulu culture.
"He was a cultural revolutionary, a cultural ambassador and a cultural expressionist," he said.
"We co-produced a number of albums. He was creative and did an excellent job."
Rebecca Malope said Jabu was a "lovely and loving person". She said it was a privilege to experience his sense of humour, and that the great joy that he took in his life was inspiring.
"I have shared a stage with him and will always remember him as a man who loved what he was doing.
"He had his own style of doing things. He was always pleasant and warm. He had a way of transferring his warmth to others and to his surroundings.
"Jabu's memory will never be forgotten because he had the spirit of music in him," she said.