LOS ANGELES – Michael Jackson's doctor pleaded not guilty Monday to involuntary manslaughter in the death of the pop star at a brief hearing that had all the trappings of another sensational celebrity courtroom drama.

Dr. Conrad Murray appeared in court in a gray suit as Jackson's father Joe, mother Katherine, and siblings LaToya, Jermaine, Tito, Jackie and Randy watched from courtroom seats behind prosecutors.

Neither Murray nor the Jacksons showed much emotion as Murray entered his plea through his attorney Ed Chernoff.

"We need justice," Joe Jackson said outside court.

Earlier, several people shouted "murderer" as Murray walked past a crowd of hundreds of reporters and Jackson fans on his way to a courthouse adjacent to Los Angeles International Airport.

Murray, 56, a Houston cardiologist who was with Jackson when he died June 25, entered his plea just hours after he was charged.

Superior Court Judge Keith L. Schwartz set bail at $75,000, three times more than the amount most people face after being charged with involuntary manslaughter.

Prosecutors had been seeking $300,000 bail for Murray, who was taken into custody by deputies but not handcuffed in public. He was expected to be released later in the day.

The judge told Murray he could travel throughout the United States after posting bail but must surrender his passport and not leave the country.