Conrad Murray Conrad Murray

Dr. Conrad Murray pleaded not guilty after being charged with involuntary manslaughter in the death of Michael Jackson.

Murray surrendered at a Los Angeles court Monday afternoon, shortly after prosecutors filed a complaint saying that Murray "did unlawfully, and without malice, kill Michael Joseph Jackson." 

Murray was released on $75,000 bail, three times the amount the charge usually carries, according to the Los Angeles Times. He is due back in court April 5. If convicted, Murray faces up to four years in prison.

Superior Court Judge Keith L. Schwartz also ordered the Grenada-born doctor to surrender his passport and not to prescribe or be in possession of anesthetics, saying, "I do not want you sedating people," according to the paper.

Coroner officially rules Michael Jackson's death a homicide

Murray, 56, arrived to court shortly before 1 p.m. local time and was escorted inside by authorities amid screams of "murderer!" from some in the large crowd outside.

Jackson's family members, including his parents, Joe and Katherine, brother Jermaine and sister La Toya, attended the arraignment.

After Murray's arraignment, his attorney, Ed Chernoff, told reporters that the doctor would not be making a statement. "He's going to head back to his family and his patients, first to Houston and then to Las Vegas," he said.

Dr. Conrad Murray's lawyer questions timeline in affidavit

Murray told police that he treated the singer for insomnia for about six weeks and had been giving Jackson 50 milligrams of propofol every night intravenously, according to a search warrant affidavit obtained by the Times.