Model Qandeel Baloch, who shot to fame for her provocative selfies that polarised the conservative Muslim country, was strangled in July by her brother Muhammad Waseem. He said she had brought shame on the family and confessed to his crime in a press conference after his arrest.
The model was criticised by detractors who found her posts indecent, but fans praised her for daring to challenge social norms by appearing in videos that by Western standards would appear tame.
The alleged nature of the accomplices' involvement was unclear.
But Jam Salahuddin, the district prosecutor, said: "Six police witnesses were not able to record their statements because of the lawyers strike," adding the accused were also not brought in for the same reason.
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The court has yet to announce its next date of hearing.
Some of Baloch's more notorious acts included offering to perform a striptease for the Pakistani cricket team, and donning a plunging scarlet dress on Valentine's Day.