Nkanyiso Mngwengwe's brother has revealed the cause death of the former Golden Arrows captain, according to the doctors who attended to him.
The defender's passing was confirmed by the club on Monday morning, with his brother Mphathi now providing more details of what happened.
"Ubhuti usishiyile [my brother has passed on]," a devastated Mphathi Mngwengwe tells KickOff.com.
"It's hard, my brother. He woke up this morning and his body started to shake. He was shaking in his room. His wife woke us up around 02h00 and we tried to give him first aid.
"We then took him to hospital in Maritzburg where the doctors told us he was already gone and had heart failure. He was confirmed dead on arrival."
Mphathi says the club and players have been supporting the family throughout this time and that details of his funeral will be discussed with Arrows.
"We are comforted by the love we are getting from the football community, especially Golden Arrows," says Mphathi.
"They've been communicating with Bonginkosi Ntuli [his close friend] who was amongst the first to arrive and has been helping us."
Mngwengwe, 30, made his debut for Arrows in August 2013 and went on to play more than 140 matches over the years.
He is survived by his two children and his fiancé, who had been preparing for their wedding.
Pictures of the departed Mngwengwe below. May he rest in peace.