Musharraf, who returned from self-imposed exile in March in a failed bid to return to power, has been charged with jailing judges who opposed his institution of martial law during his 9-year rule. Pakistan's special Anti-Terrorism Court has barred the retired general from ever running for office again.
The Express Tribune said the main complainant in the judicial arrest case has disassociated himself from the court proceedings, though Dawn News said the lead plaintiff, Chaudhry Mohammad Aslam Ghumman, had yet to withdraw his petition in writing.
It was unclear what if any impact Ghumman's withdrawal would have on the proceedings.
Musharraf also faces potential criminal prosecution for his administration's shoddy security detail that led to the assassination of former Prime Minister Benazir Bhutto and for the killing of tribal leader Akbar Bugti in 2006.
The Anti-Terrorism Court adjourned Musharraf's case until June 1.
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