LOS ANGELES -- A prosecutor told jurors Thursday that Michael Jackson's doctor is responsible for his death and for leaving his children without a father.

Deputy District Attorney David Walgren invoked Jackson's children early in his closing argument, saying the superstar had them in mind in his final days and they were a driving force behind his planned series of comeback concerts.

"For Michael's children, this case will go on forever because they do not have a father," Walgren said. "They do not have a father because of the actions of Conrad Murray."

Walgren also recounted for jurors how Jackson's daughter Paris came upon Murray frantically trying to revive her lifeless father and screaming, "Daddy!"

The prosecutor urged jurors to convict Murray of involuntary manslaughter in Jackson's death on June 25, 2009. He repeatedly called Murray's treatment of Jackson bizarre and said there was no precedent for the cardiologist giving the singer a powerful anesthetic as a sleep aid.

Still, Jackson trusted him and that eventually cost the singer his life, Walgren said.

"Conrad Murray looked out for himself and himself alone," the prosecutor said.

Murray silently watched slides shown by the prosecutor during his presentation. He has pleaded not guilty and his attorneys will lay out his version of events after the prosecutor finishes his argument.

Throughout the trial, Walgren cast Murray as an inept, reckless physician who was distracted after giving the singer a powerful dose of the anesthetic propofol as a sleep aid.

Walgren noted that Murray did not call 911 after finding Jackson unresponsive. Instead he called Jackson's personal assistant, a decision the prosecutor said was just one of the doctor's bizarre actions on the day the singer died.

"He knew his acts killed Michael Jackson," Walgren said. "Maybe he's panicked. Maybe he's cleaning up ... But he's putting Conrad Murray first. He's intentionally not calling 911. He's intentionally delaying help that could have saved Michael Jackson's life."