A St. Louis County judge is set to resume hearing arguments in a lawsuit seeking an independent probe of the county prosecutor's handling of grand jury proceedings in the Ferguson police shooting of Michael Brown.

Judge Joseph Walsh III will continue hearing the case Friday after suspending proceedings last month while giving strong indications that he may toss the lawsuit.

The activists who filed the lawsuit want Walsh to appoint a special prosecutor to investigate county prosecutor Robert McCulloch's handling of the Brown case.

They say the grand jury's decision not to indict Darren Wilson, who was a white Ferguson officer, in the fatal shooting of Brown, an unarmed black 18-year-old, was inappropriately influenced by McCulloch's desire for Wilson not to face charges.

A Justice Department investigation also cleared Wilson.