ISLAMABAD: Pakistan Tehreek-e-Insaf (PTI) Chairman Imran Khan criticised on Tuesday the Intelligence Bureau?s chief for reportedly meeting former prime minister Nawaz Sharif in London, demanding the resignation of the agency's chief.

?What was he doing visiting a disqualified PM in London over four days at taxpayers' expense?? said the PTI chief in a series of Twitter messages.

He further said that the IB in-charge is an official of the state, paid for by taxpayers and his duty is to the state, not to the Sharif family.

In light of Nawaz?s appearance before the Islamabad Accountability Bureau in relation to the National Accountability Bureau?s references, Imran also lashed out against the official protocol given to the ousted premier today.

?The official protocol given to a disgraced, disqualified PM, also accused of tax evasion, forgery, money laundering etc, is shameful,? he said.

Imran further said that this sends the wrong message to society that the powerful can break laws with impunity. ?Clearly this is mafia rule not democracy,? he added.

Today, the accountability court hearing corruption cases against the Sharif family ordered that former premier Nawaz Sharif will be indicted on October 2.

Moreover, the court issued bailable arrest warrants for Nawaz's daughter Maryam, sons Hussain and Hasan, and son-in-law MNA Capt (retd) Safdar as they failed to appear in court today despite two earlier summons.

NAB references: Nawaz?s indictment on Oct 2; warrants issued for children

Around 1,500 security personnel were deployed to secure the route from Punjab House to Sector G-11, where the court is located, as well as the courts complex

Nawaz returned to Pakistan on Monday after spending over three weeks in London.

Sources said a number of party leaders and government officials accompanied Nawaz as well in his 37-vehicle convoy, however, only the vehicle carrying Nawaz and his legal counsel were allowed inside the court complex.