LOS ANGELES -- Lawyers for concert promoter AEG Live LLC have concluded their defence in a case filed by Michael Jackson's mother over her son's death.

Attorneys rested their case on Wednesday afternoon after playing the videotaped testimony of Jackson's longtime physician Dr. Allan Metzger. The trial is in its 21st week and jurors are expected to begin deliberations next week.

AEG Live's defence has focused heavily on testimony from Jackson's former physicians, who have detailed their treatments for the pop superstar.

Katherine Jackson claims the concert promoter negligently hired the singer's final physician, Conrad Murray, and should be held liable for her son's death. Murray was convicted of involuntary manslaughter in 2011 after administering a fatal dose of anesthetic in the singer's bedroom.

AEG denies it hired Murray.