According to Billboard, lawyers for the late Michael Jackson‘s estate quietly threatened to sue an pop culture collectibles website this week over their plans to auction off Jackson’s previously unreleased studio recordings that the estate claimed were “unquestionably [allegedly] stolen,” which resulted in the items being allegedly withdrawn from the sale.

Last month Gotta Have Rock and Roll have said it planned to auction more than two dozen masters tapes that were purportedly recorded by Jackson during the 1994 sessions at The Hit Factory, which is a famed New York City studio. The auction house called the tapes “incredibly rare unreleased recordings” and said each would allegedly eventually sell for as much as $4000.

But after alleged correspondence from attorneys for the alleged Jackson estate that was obtained by Billboard, which included an email from well-known litigator Alex Spiro earlier this week that allegedly threatened to seek an allegedly immediate court restraining order, which led the alleged tapes to be pulled from the auction and are no longer listed on the site.