American rapper and actor Earl Simmons, known by the stage name DMX or Dark Man X, died on Friday, his record label said, after he suffered a heart attack during what media reports said was a drug overdose. He was 50 years old.

The chart-topping artist's songs included "Party Up (Up in Here)" and "X Gon' Give It To Ya." His career had been marked by legal troubles and prison time.

Music label Def Jam Recordings said in a statement it was saddened by "the loss of our brother Earl 'DMX' Simmons."