Below is the official word from Roc Raida's family.
"Anthony Williams p/k to the world as The Legendary Grandmaster Roc Raida has passed away unexpectedly today September 19 2009. He is survived by his wife, three lovely daughters, mother and friends. Raida was recently in an mixed martial arts accident, something that he has been practicing for several years. Although he had under gone two surgeries with great success, was released to an inpatient physical therapy facility and was in great spirits the past few days. This morning he started to have complications and passed. The family asks for privacy at this time."
Nothing but the deepest condolenses go out to his family and friends.