The jury in the trial of Dr Conrad Murray, doctor to pop star Michael Jackson, has reached a verdict. The announcement is expected at the Los Angeles court at around 13:00 local time (21:00 GMT). Dr Murray, 58, who is accused of involuntary manslaughter, denies giving the pop superstar a fatal overdose of a powerful sedative, propofol. If convicted, he could face a sentence of four years in prison and lose his license to practise medicine. The jury - made up of one African American, six whites and five Hispanics - deliberated on Friday and through the morning on Monday. Outside the court, fans of Michael Jackson cheered and chanted, "Guilty! Guilty!" During the six-week trial, 49 witnesses and more than 300 pieces of evidence were presented. In his closing argument last Thursday, the prosecution said Dr Murray had caused the star's death through negligence, depriving Jackson's children of their father and the world of a "genius". The defence argued that Jackson was a drug addict who caused his own death by giving himself an extra dose of propofol while the cardiologist was out of the room at the star's rented mansion in Los Angeles.