Rapper COOLIO DEAD AT 59

Coolio died Wednesday in Los Angeles … TMZ has learned.

The rapper who achieved enormous success in the 90s was visiting a friend late Wednesday afternoon when he passed away.

Coolio’s longtime manager, Jarez, says Coolio went to the bathroom at his friend’s house, but when he didn’t come after a while … the friend kept calling for him, and eventually went in and found Coolio laying on the floor.

– Law enforcement sources tell TMZ … paramedics were called to a house in Los Angeles around 4 PM for a medical emergency and when they got there they pronounced Coolio dead.

We’re told police have opened a death investigation but as of right now there does not appear to be signs of foul play. However, our sources say the coroner will make a final determination following an autopsy.

Law enforcement sources tell TMZ no drugs or drug paraphernalia were found at the scene of Coolio’s death. An autopsy and toxicology test will be used to determine an official cause of death.