Australian choreographer Wade Robson has detailed the sex acts he says Michael Jackson committed on him in court papers filed in Los Angeles.

Australian choreographer Wade Robson has turned up the heat on Michael Jackson’s estate by revealing a long, graphic list of molestation allegations against the deceased pop star.

The allegations are contained in a 111-page document filed in the Los Angeles Superior Court.

Brisbane-born Robson, 31, claims Jackson sexually abused him from the age of seven through to 14.

The court filing requests Jackson’s company, MJJ Productions, admit 93 allegations.

The allegations range from Jackson’s company hiring Robson’s mother Joy in 1991 and helping Robson apply for a US work visa to various sex acts Jackson committed on the young Robson.

“Sexual activities between decedent and Wade Robson included Wade Robson lying on top of decedent…,” the court papers state.

Radar Online was first to report the new court filing.

Brisbane-born Robson had been one of Jackson’s staunchest supporters and had testified in court Jackson never molested him.

The testimony was key in Jackson beating molestation charges in California in 2005.

Robson said it wasn’t until after Jackson’s 2009 death and the birth of his own son that he was psychologically and emotionally able to understand Jackson had sexually abused him.

Robson filed a late claim in a Los Angeles court against the dead singer’s estate, which is reportedly worth as much as $US1.5 billion ($A1.62 billion).

Jackson estate lawyers have described Robson’s delayed allegations as “outrageous and pathetic”.

Robson was a five-year-old dance prodigy when he first met Jackson.