The Pennsylvania Supreme Court issued a show-cause order Thursday asking the only commissioned Philadelphia Traffic Court judge not to have been indicted in a recent federal prosecution of alleged ticket-fixing to explain why she shouldn’t be suspended for failure to participate in the internal probe of the matter.

The Supreme Court is seeking to suspend Traffic Court Judge Christine Solomon for 90 days without pay for her “refusal to cooperate with the court-ordered administrative review of the Traffic Court,” according to the order.