Panama Papers leak case
On 3 April 2016 the
International Consortium of Investigative Journalists (ICIJ) made 11.5 million secret documents, later known as the
Panama Papers, available to the public.
 The documents, sourced from Panamanian law firm
Mossack Fonseca, among other revelations about other public figures in many other countries, included details of eight
offshore companies with links to the family of
Nawaz Sharif, the then-incumbent
Prime Minister of Pakistan, and his brother
Shehbaz Sharif, the incumbent
Chief Minister of Punjab.
 According to the ICIJ, Sharif's children
Hassan Nawaz and
Hussain Nawaz “were owners or had the right to authorise transactions for several companies”.
 Mossack Fonseca records tied the children to four offshore companies, Nescoll Limited, Nielson Holdings Limited, Coomber Group Inc., and Hangon Property Holdings Limited.
 The companies acquired luxury
real estate in London from 2006 to 2007. The real estate was
collateral for loans of up to $13.8 million, according to the leaked Panama Papers.
Failure to form judicial commission
Facing growing criticism, Sharif announced the formation of a
judicial commission under a retired judge of the
Supreme Court of Pakistan, in a nationwide address on 5 April 2016. However, former justices
Tassaduq Hussain Jillani,
Amir-ul-Mulk Mengal, Sahir Ali, and Tanvir Ahmad Khan all refused to participate and no commission was formed.
 The federal government remained committed to forming a commission, negotiating its
terms of reference with opposition parties
Pakistan People's Party and
Pakistan Tehreek-e-Insaf. In a second statewide address on 22 April 2016, Sharif announced he would resign if proven guilty.
 The latter effort failed when
Chief Justice of Pakistan
Anwar Zaheer Jamali, cited broad, open-ended terms of reference and the limited scope of the law in this area, and declined to form "a toothless commission, which will serve no useful purpose."
Prime Minister's speech
In a televised address to the
National Assembly of Pakistan on 16 May 2016, Sharif suggested forming a joint committee to draft the terms of reference for establishing a judicial commission. He said he was not afraid of accountability, while criticizing opposition figures: "Today, people living in
bungalows and commuting in helicopters are accusing me of misconduct. Can they explain before the nation as to how they earned all this money and how much tax they paid?"
 In his speech, Sharif said he would clear the air about the London flats, but did not return to the subject.
 He reiterated that the flats had been purchased with money earned from the sale of Jeddah Steel Mills, which had belonged to his father. Later, Sharif omitted any reference to his family's business connections with the
Qatari royal family during his 16 May speech, inviting allegations of contradictory statements.
Following Sharif's speech, PTI chairman Imran Khan filed a petition through counsel
Naeem Bokhari with the
Supreme Court of Pakistan on 29 August 2016, seeking Sharif's disqualification as prime minister and as a
member of the National Assembly of Pakistan. Other political leaders including
Sheikh Rashid Ahmed of
Awami Muslim League, and
Jamat-e-Islami, also expressed support for the petition. It targeted Sharif's children, his son-in-law
Muhammad Safdar, and his brother-in-law and the incumbent
Ishaq Dar as well. PTI workers staged a
sit-in outside Sharif's private residence at
Lahore on 30 September 2016. Khan subsequently called on supporters to "lock-down"
Islamabad until Nawaz Sharif "resigned or presented himself for accountability".