Haqqani, who is currently abroad, contended in his petition that he could not return to Pakistan as he had security concerns.
Several intelligence agencies were in contact with Ijaz and his family feared for his life in case he travelled to Pakistan, Haqqani contended.
Noting that Ijaz had been allowed to testify via a video link from London, Haqqani said he should be given the same facility.
The Supreme Court-appointed judicial commission has already rejected a similar petition from Haqqani. After Haqqani failed to appear before the commission on March 26, the panel gave the former envoy a final opportunity to record his statement.
The commission has also sought an extension from the Supreme Court as its term is set to end on March 31. The next hearing is expected to be scheduled after the court grants an extension.
