Islamabad: A Pakistani judicial panel probing the memo issue has asked star witness Mansoor Ijaz to produce a certified copy of phone bills he presented as proof of his conversations with former envoy to the US Husain Haqqani.

On the third day of Ijaz's deposition before the Supreme Court-appointed commission yesterday, the main accuser in the memo scandal presented four pages of a 39-page BlackBerry phone bill to back up his claims about his conversations with Haqqani, who was then the Pakistani envoy to the US.

The four pages he presented were related to his communications with Haqqani on May 23, 2011, Ijaz claimed while deposing via a video link from the Pakistan High Commission in London.

Ijaz claimed 11 conference calls were made between him, former US National Security Advisor Jim Jones and Haqqani during May 2011. Zahid Bukhari, the counsel for Haqqani, said the copies of the bill did not contain any names or phone numbers and were thus ineligible as evidence.

Ijaz contended that his phone was registered in his company's name and he could not reveal the bill's total contents because they were "classified".

The three-judge commission, which is conducting the proceedings from Islamabad, then ordered Ijaz to obtain a certified copy of the bill from his phone company and send it to Islamabad.

Heated words were exchanged between Ijaz and Bukhari during the proceedings. At one point, Ijaz said Bukhari was speaking "nonsense" and Bukhari's aide objected to his behaviour. The commission ordered Ijaz to behave in accordance with the norms of a court.

Ijaz made no new revelation during his deposition.