Panama's government is creating an international committee of experts to recommend ways to boost transparency in the Central American country's offshore financial industry.
President Juan Carlos Varela is trying to shore up confidence in his nation's financial sector after the leaking of 11.5 million documents from a prominent Panama-based law firm which helped create shell companies for the world's rich and famous.
New Fifa president Gianni Infantino has denied any wrongdoing over his role in a TV rights deal when he worked at Uefa.
The Swiss signed off a contract with two businessmen who have since been accused of bribery, the leaked Panama documents reveal.
Hugo and Mariano Jinkis bought TV rights for UEFA Champions League football in 2006 and immediately sold them on for almost three times the price.
The contract was signed off by Mr Infantino, who was a Uefa director at the time.
In a statement on Tuesday, Mr Infantino vehemently denied any wrongdoing, saying he is "dismayed" that his "integrity is being doubted".
The financial watchdog ordered banks and businesses to check whether they have links to a law firm at the centre of the Panama Papers leak.
In a letter to the European Council President in 2013 Mr Cameron argued offshore trusts should not be subject to new transparency proposals.
The nature of the tax avoidance carried out by Blairmore Holdings may have been misunderstood.