No one knows where Chandler – whose family reportedly received a $20 million settlement from Jacko in 1994 – has gone.
The 36-year-old – who has never spoken publicly about the scandal – was due to give evidence in an ongoing court case against Jackson’s estate.
But his sister Lily claims he has vanished.
Celebrity choreographer Wade Robson is suing Jackson’s estate, claiming the King of Pop molested him for seven years at his Neverland Ranch – beginning when he was just seven.
Chandler has been asked to give evidence in the case – but his legal team cannot find him, according to TMZ.
Robson – who danced in Jackson’s music videos for Black and White, Jam and Heal the World, as a boy – asked Lily to appear in court instead.
But Lily has asked the judge to block the request – reportedly over fears of a backlash from Jackson fans.
She was only five years old when she began visiting Neverland and has no memory of Jackson’s alleged sexual misconduct.
WADE'S WORLD: Wade Robson has been a judge on So You Think You Can Dance
Chandler and his family received a payout after Chandler’s dad Evan accused Jackson of sexually abusing Jordan when he was 13, in 1993.
The full details of the agreement between the family and the singer have never been revealed.
Reports claimed that Chandler was given a new identity and life in New York after the settlement.
But Robson – who choreographed several Britney Spears hits, including Oops...I Did It Again – has asked the court and Jackson’s estate to release all details connecting him to child abuse.
Lawyers have written to the MJ estate asking them to make any confidentiality agreements public.