Pop siren Janet Jackson has postponed part of her Australian tour so she can join her family's side during the trial of the doctor who is accused of involuntary manslaughter in the death of her late brother, Michael Jackson.

The trial of Dr. Conrad Murray is currently taking place in Los Angeles -- prosecutors are expected to finish with their case this week. Then, the defense will present their arguments in the trial.

"When I planned these shows, the schedule in California was completely different,” Janet said in a Sunday statement to The Associated Press. "After talking with my family last night, I decided we must be together right now… This saddens me in so many ways."

Promoters for Janet's 'Number Ones: Up Close and Personal’ tour fully back the singer's decision to support her family at this crucial time. "It is important that Janet is with her family at this critical point in the hearing," said promoter Paul Dainty. While Janet and our company apologize for any inconvenience for the reschedule of the Melbourne shows, we thank Janet for the great and successful concerts in Perth and Adelaide and eagerly await her return. Our thoughts and prayers are with Janet and the entire Jackson family."

Janet's canceled shows in Melbourne this week have been rescheduled for Nov. 3 at Rod Laver Arena.