The New York Times reports that Dr. Jack Kevorkian died Friday morning at the age of 83. The cause of death is currently unknown. Local media has reported that he has been suffering from kidney and respiratory problems

Kevorkian was controversial for his practice of assisted suicide. He served multiple jail sentences and was frequently engaged in legal battles during his career.

For more information, on the life and career of Kevorkian, read the entire New York Times report.