Conrad Murray in court during his arraignment at the Los Angeles Superior Court Airport Branch Courthouse, Feb. 8, 2010

*Michael Jackson’s doctor Conrad Murray was released on $75,000 bail Monday after pleading not guilty to a charge of involuntary manslaughter in the pop star’s death.

The cardiologist is due back in court on April 5, when the prosecution will for the first time reveal the evidence they believe shows his “gross negligence” was the direct cause of the singer’s death.

Superior Court Judge Keith Schwartz also ordered Murray to turn in his passport and said he could travel within the U.S., but not to any foreign country. The prosecutor had suggested he might flee to his native Grenada or to Trinidad where he has a child.

 Schwartz told Murray he was restricting his practice of medicine, barring him from using any anesthetic agent, specifically the drug propofol that a coroner’s report found was the cause of Jackson’s death with other drugs as contributing factors. 

“I don’t want you sedating people,” the judge said. 

Michael’s sister LaToya Jackson, in court along with siblings including Jermaine, Tito, Jackie and Randy, issued a statement immediately after the hearing saying she believed her brother had been murdered and that others besides Murray had a hand in his death. 

“I will continue to fight until all of the proper individuals are brought forth and justice is served,” LaToya said. 

Her father, Joe Jackson, expressed the same views Monday night in an interview on “Larry King Live” and claimed that his son believed he was going to be murdered. He did not elaborate. As he left the courtroom, Papa Joe said, “We need justice.” 

Murray is accused of giving Jackson a fatal dose of an anesthetic to help him sleep. Jackson died June 25. If convicted, the doctor could face up to four years in prison. 

Below, Murray arrives in court at 12:55 p.m. PT on Feb. 8.