The 66-year-old actor, who played Benny Stulwicz in the long-running TV legal drama, died last month (17Mar16) after losing his battle with a string of health issues, and now his official cause of death has been revealed.

According to Drake's death certificate, obtained by TMZ.com, he had been diagnosed with polycythemia vera - a rare form of cancer related to an overproduction of red blood cells in the bone marrow.

The medical examiner also listed cardiac arrest, hypertension, and morbid obesity as causes of death.

Drake's body was found in his Hollywood apartment by a friend.