The petition was filed a day after the MQM leadership protested in front of Supreme Court for the recovery of missing workers.
MQM's lawmaker Farooq Sattar told reporters that during the elections on May 11 as many as 30 workers of MQM had been kidnapped.
He claimed of those kidnapped, 20 had been murdered while 10 are still missing.
""Workers were kidnapped by persons without having uniforms, riding in vehicles without number plates. There is a general opinion that they were Rangers," he alleged referring to Pakistan's paramilitary force.
In the last government, the MQM which recently underwent major organisational changes, was part of the coalition government at the centre and in province with the Pakistan Peoples Party.
