The investigation dates back to the 2016 Panama Papers leak.
Can a computer font just prove the Sharif family guilty?
But the Sharifs and their allies were defiant, with his ruling PML-N party dismissing the report as "trash" in a statement, and his daughter and presumptive political heir Maryam - also named in the report - vowing on Twitter that the allegations would be "decimated" in court.
But that may soon change - all because of the Calibri clue.
However, the Sharif clan's supporters have claimed that the Calibri typeface was indeed available in 2006, prompting Dawn to do some digging. However, the documents were written using Microsoft's Calibri font, which was not widely released until 2007.
The whole thing has prompted a tweet storm with the hastag #Fontgate. I believe the first betas of Longhorn did not include the ClearType fonts, but as this was all released by Microsoft, I do not know any exact release dates. In April, the Supreme Court ruled that there was insufficient evidence to remove Sharif from office - by a split 2-3 verdict - but it ordered further investigations, which the JIT was set up to carry out.
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Sources close to PMLN said that it would be an important meeting to woo some of the disgruntled backbenchers of the party whose support would be a key for Sharif. There are now calls for the prime minister to resign, though it appears that he intends to see the court case through.
The information related to the properties in London owned by the Sharif family came out previous year after classified documents from the Panama based law firm Mossack Fonseca were leaked. "We will continue supporting Nawaz Sharif", Danyal Butt, 40, told Pakistan Today, adding he was unable to understand allegations levelled against the prime minister by the JIT.
The court is considering its next steps and will begin deciding what action to take next week.
Sharif's children were linked to offshore companies in the British Virgin Islands which were then used to purchase expensive property in London, and the Pakistan federal investigation agency believed the properties were bought with laundered money.
Former Prime Minister Benazir Bhutto, former union ministers, members of the Senate and several businessmen were also named in the Panama Papers.
Sharif has always denied any wrongdoing over his family allegedly using offshore companies to buy luxury flats in a posh London neighborhood, and said his family wealth was acquired legally.