The leader of Muttahida Qaumi Movement-Pakistan (MQM-P) was present in the when he was indicted along with other suspects in the case that relates to the brutal violence in the port city, some 11 years ago.
However, the court indicted them in one case and summoned witnesses to record their statements at the next hearing on June 23.
The May 12 carnage was one of the deadliest incidents of violence in the megapolis.
Around 50 people were killed and hundreds were left injured as clashes broke out in the city between rival political groups.
The former top judge had remained confined to the lounge of the airport throughout the day; he returned to Islamabad without addressing a lawyers’ convention.