Osborne, 55, was transported to the hospital after his girlfriend found him unresponsive inside their apartment in Plano, Texas.
Police are investigating Osborne's death and believe it to be "accidental."
The day before his death, Osborne expressed excitement over the summer season via Facebook. He wrote, "I HAVE SOO MUCH GOING ON THIS SUMMER dON'T KNOW IF i'M COMING OR GOING! bUT......THATS THE WAY HU HUH i LIKE IT HU HUH HU HUH! mISS MY BROTHERS!!!!"