The men were produced before Justice Amir Hani Muslim, a member of the three-judge bench led by Chief Justice Iftikhar Chaudhry that is hearing the case of "missing persons".
The "missing persons", their faces covered, were brought to the apex court in two vehicles. Attorney General Munir Malik was also present in court at the time.
The two vehicles were allowed to go inside the Supreme Court. Cars are usually stopped at the outer gate of the court complex.
An in-camera hearing was held in the chambers of Justice Muslim, who summoned Ataullah, the head of an internment centre in the northwestern town of Malakand, with all records pertaining to detentions.
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Relatives were also summoned to identify the "missing persons". At least six of the men were identified by their relatives, reports said.
Yesterday, the apex court had ordered authorities to present the "missing persons" before Justice Muslim for an in-camera session. The court had said the Attorney General could question the "missing persons" during this session.
Asif said seven of them had been released, three were living in Waziristan tribal region, one had moved to Saudi Arabia and eight more had reportedly moved to Kunar province of Afghanistan.
He said details of five men were not available while information about seven men was "very sensitive". Asif further said none of the "missing persons" were in the military's custody.
The Supreme Court has been pressuring the government to produce the detainees. It has warned it would be forced to summon senior officials if they were not produced.