Prosecutors in Los Angeles on Monday charged Michael Jackson’s personal physician Dr. Conrad Murray with involuntary manslaughter, according to abcnews.com .
Murray, a Meharry Medical College graduate, surrendered to authorities and entered a not guilty plea later in the afternoon.
The indictment comes after and eight-month investigation into the King of Pop’s June 2009 death . Jackson was 50.
Prosecutors say the Houston-based cardiologist allegedly administering a lethal cocktail of painkillers and anesthetics to the entertainer hours before he died June 25.
If convicted, Murray faces up to four years in prison.