Costa Titch's mother has called out National Health Laboratory Services for failing to release the test result of her late son.

The grieving mother said the toxicology test result of her son is being delayed, and without it, the police can’t do any investigation. In a previous post, she had suggested that her son was murdered.

"The National Health Laboratory Services can take months or even years to finalise toxicology tests. This means I am not the only mother in South Africa that has to wait for answers. It also means if anyone did poison my son, they could get away with murder. I’m pleading for help to get answers as even the police cannot do anything without these medical results."

The South African Amapiano Rapper Costa Titch suddenly passed away at the age of 28 after collapsing on stage while performing at a show in South Africa.

Video shared on social media showed the performer stumbling on stage and falling to the ground once before standing back up and continuing his performance.

Shortly after, he could be seen falling down once again and rolling off the stage before collapsing on the spot.