Late last Friday, the hip-hop world lost an ATL legend as former hitmaker DJ Unk passed away at the young age of 43. Today, we learn the cause of death as the Atlanta rapper died from a heart attack, TMZ has learned. Unk’s wife, Sherkita Long-Platt tells TMZ he died in his sleep on January 24 after suffering a heart attack. She says the family is aware of various rumors going around as to how he died … and she wants people to know the truth. She tells us speculation he died from drugs is not true as he didn’t do drugs. R.I.P. to DJ Unk.