Famed Atlanta deejay Anthony Leonard Platt, known for his hit songs "Walk it Out" and "2 Step," has died his record label confirmed, writing, "It is with a heavy heart and profound sadness that we announce the passing of a true ATL legend.

Anthony Leonard Platt, also known as DJ Unk, has died at age 43, according to reports from the Atlanta Journal-Constitution and Rolling Stone. The Atlanta rapper was best known for the hits "Walk It Out" and "2 Step.

DJ Unk's cause of death has been revealed. The Walk It Out rapper died from a heart attack, TMZ reported. His wife, Sherkita Long-Platt, told the outlet that her husband died in his sleep on January 24 after suffering cardiac arrest.