There is a possibility that the two older children of deceased King of Pop, Michael Jackson, could be called as witnesses after Katherine Jackson, the grandmother and guardian of Prince, Paris and Blanket Jackson, filed on Thursday a civil lawsuit against AEG Live.

AEG Live was the concert promoter of Michael which Katherine is blaming for the wrongful death of her son, claiming AEG was negligent in hiring Dr Conrad Murray as the physician for a series of London comeback concerts of Jackson in 2009.

A month before the concert, Michael died at age 50 in Los Angeles, California, because of overdose of the anesthetic propofol. Mr Murray was convicted for involuntary manslaughter and is serving a four-year sentence.

Prince and Paris were in the same LA house when their father died. Los Angeles Superior Court Judge Yvette Palazuelos said that as part of the pre-trial, the two Jackson children as well as their grandmother could be called to the witness stand.

The judge also said that the concert promoter could raise Michael's 2005 sexual molestation case in their defense for the wrongful death charge since it could help establish the singer's drug abuse and dependence history.

Michael, whose sexual preference is being question despite having three children by nurse Debbie Rowe and another unidentified woman, was accused of sexually molesting a 13-year-old male cancer survivor whom he hosted at Neverland Ranch. He was acquitted of all charges, but was subjected to a humiliating strip and body search and reportedly paid the family of the accuser a huge amount of money to end the case.

The civil case is expected to begin on April 2 and could last for three months.

The judge said Mr Murray could also be called to the witness stand although he is expected to invoke his right to remain silent against self incrimination as provided by the Fifth Amendment.

Paris is now 14 and has generated a lot of media interest. She was questioned on Thursday by AEG lawyers as part of the deposition about the last days of her father.

AEG also asked the judge to order Blanket, 10, to also appear for deposition, but the doctor of the youngest Jackson child objected because of its medical impact on the boy.

The eldest, Prince, 16, gave his statement earlier this month in which he said he was intimately involved with his father's affairs. The Jackson lawyers complained about the questions thrown to Prince, including much personal stuff such as his texting and tweeting habits, places he has visited, teachers he had and his efforts to begin a career as ET correspondent while studying. The lawyers said those questions were irrelevant to the lawsuit.

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