Kelly Khumalo (Photo:Getty/Gallo)
The singer abruptly walked off stage when the crowd started to chant Senzo Meyiwa's name. One event goer held up a poster with the words "Justice for Senzo Meyiwa" written on it.
Senzo was dating Kelly when he was tragically murdered while he was at the singer's family home in 2014.
Among those in the house at the time of the murder was Kelly, her sister, mother, son, and three of Senzo's friends.
Following the event, Kelly Khumalo wrote on Twitter: "You Think a bunch of bullies who find comfort in hurting ppl would scare me? Think again I am the Light and the Power Of God in a human form. Dare touch me!"
She has also retweeted fans who have sent her messages of support.