Addressing the nation, Sharif announced formation of the commission to probe allegations against him and his family.
"I hereby announce to form a judicial commission which will be led by a former judge of the Supreme Court. This commission will weigh the allegations being levelled and will give its verdict after due investigation," he said.
The judicial commission will be led by a retired Supreme Court judge, said the premier.
"My family has faced a barrage of accusations. My family was not involved in politics till much later, as such, even before I got into politics, we were an established industrial family," the prime minister said.
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"I want the nation to decide for themselves the reality behind these allegations which are being levelled for the last 25 years," he said.
Sharif also challenged all those hurling allegations against him and his family to present evidence of any financial wrongdoing before the commission.
A massive leak of 11.5 million secret tax documents from a Panamanian law firm that specialises in offshore tax havens has exposed the covert offshore dealings of around 140 political figures globally including the Sharif family.
The vast stash of records, covering around 40 years, was obtained from an anonymous source by German daily Sueddeutsche Zeitung and shared with media worldwide by the International Consortium of Investigative Journalists (ICIJ).