DETROIT (WWJ/AP) – An attorney claims a judge and two lawyers involved in a long-running dispute over civil rights pioneer Rosa Parks’ estate conspired to drain the estate’s cash.

Attorney Stephen G. Cohen said in court papers Tuesday that Wayne County Probate Judge Freddie Burton Jr. conspired with John Chase Jr. and Melvin Jefferson Jr. to rack up more than $507,000 in mostly unnecessary legal fees. Cohen claims the estate is $88,000 in debt.

READ MORE: Amazon Scammers Stole Over $27M From Consumers In A Year

Jefferson told The Detroit News the court action was a “great fabrication.” Burton declined to comment to the Detroit Free Press. An email seeking comment was sent Thursday to Chase.

A hearing is set for May 22.

Parks left almost all her estate to the Rosa and Raymond Parks Institute — which Cohen represents — that was founded to teach young people leadership and character development. Relatives challenged Parks’ will after her 2005 death.

READ MORE: Supply Chain Issues: 'There Really Are Problems Everywhere,' Even For Small Companies

Parks became a civil rights pioneer for refusing to give up her seat on a bus to a white man in Montgomery, Ala., in 1955. She later lived in Detroit and died at age 92.

MORE: Mich. High Court Reverses Rosa Parks Estate Ruling

Lawyer Claims Fees Drained Rosa Parks’ Estate

MORE NEWS: Volvo Adds 195,000 Vehicles To Recall For Dangerous Air Bags

TM and © Copyright 2012 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2012 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed. The Associated Press contributed to this report.