Memorabilia including the late Changes hitmaker's passport, driver's licence, handwritten lyrics, scripts, and notebooks, as well as clothing and jewellery, are set to go under the hammer at online auction house Moments in Time, but celebrity attorney Howard King has filed a string of lawsuits in a bid to halt the sales.

According to court papers obtained by TMZ.com, the suits name the owners of Moments In Time as defendants, alongside the two individuals who allegedly gained possession of the items from a third party. Estate chiefs insist they repeatedly warned the defendants the third party had no ownership rights to the items, and therefore no right to sell them, but their messages were ignored, and now they are taking them to court.

King is acting on behalf of the late Afeni Shakur, who was placed in charge of her son's estate after he was killed in a drive-by shooting in Las Vegas in 1996, aged just 25. She died last year (16).

The news of the lawsuits emerges days before Tupac is set to be posthumously inducted into the Rock and Roll Hall of Fame by his longtime friend Snoop Dogg.