Pakistan Tehreek-e-Insaf (PTI) on Sunday observed its ‘thanksgiving’ rally to celebrate the disqualification of Nawaz Sharif from premiership by the Supreme Court.

Addressing a huge crowd of supporters at Parade Ground, Imran Khan said they cancelled off street protests after judges of the Supreme Court "asked us to come to court".

The cricket star-turned-politician, who spearheaded demands for an investigation on Nawaz Sharif after the leaking of the Panama Papers, had announced to observe a "thanksgiving day to celebrate Pakistan's victory against corruption".

"We called off protest because on November 1 judges said to us that we should come in court. Many people told us, you had a golden opportunity for justice but going to court is the worst mistake."

The PTI chief said his party will introduce a merit based system in Pakistan. "I will revamp the cricket system only by bringing merit system from top to bottom," he said.

"Our fight is not against Sharif family but the corrupt, won't spare Zardari or even Fazlur Rehman. Asif Zardari I want to send out a message to you that your turn is next."

Awami Muslim League Chairman Sheikh Rashid said Friday’s decision had restored people’s faith in the institutions of the country.

“It was an historic decision. Pakistanis wanted change. They got it on Friday,” said Rashid. “Thank God, our institutions are strong.”

Khyber Pakhtunkhwa Chief Minister Pervaiz Khattak said Shahbaz Sharif, long-time successor to Nawaz Sharif and chief minister of the vast Punjab province, was the next target.

"People of Lahore get ready to bring down Shahbaz Sharif now, we'll defeat Shahbaz Sharif," he said. "The most important thing is we won't stop until they reach Adiala jail."

Senior leader of the party, Jahangir Tareen, said it was Shahbaz Sharif's turn for accountability. "I ask Shahbaz Sharif whether you're ready for the accountability?" he said.

"Shahbaz Sharif you will have to be answerable to the NAB and court over Hudaibiya case."