Xolile Mngeni's funeral underway
Mngeni’s family are singing hymns and praying inside the house before a eulogy will be delivered.
Mngeni died at the Goodwood Prison after being diagnosed with a terminal brain tumor in 2011.
He is one of three men convicted of her murder.
Anni's husband, Shrien Dewani, is currently on trial for allegedly orchestrating her murder while on honeymoon in Cape Town in November 2010.
Dewani has, however, maintained he is innocent and has pleaded not guilty to five charges, including one of murder.
Family, friends and neighbours are sitting under a green and white marquee, attached to the front of the house. Chairs have been packed out along the pavement and onto the street as more people arrive.
Mngeni's family members are singing hymns and praying inside the house before a eulogy will be delivered.
Some family members are wearing t-shirts with a picture of him reading "Rest in peace", Xolile Mngeni.
Meanwhile, a Cape Town lawyer said the convicted killer's death is unlikely to have any impact on the murder trial.
Experts found that he was an unreliable witness in his own trial.
Its unlikely Mngeni would've been called to testify in the matter.
Mngeni and two other men, Mziwamadoda Qwabe and Zola Tongo were sentenced for their role in killing Anni four years ago.
Qwabe and Tongo entered into plea bargains with the state shortly after they were arrested for the murder.