Story highlights David Cameron says he and his wife paid UK income tax on 5,000 shares in a Panamanian-based trust

Cameron wasn't yet Prime Minister when he sold the holdings in 2010

Journalism group says documents it acquired show Panamanian law firm helped set up shell companies

(CNN) David Cameron and his wife, Samantha, profited from shares they had in a Panamanian-based trust set up by his late father, the British Prime Minister told CNN affiliate ITV News in an exclusive interview.

Cameron, who told ITV he has nothing to hide, said he and his wife had 5,000 shares of Blairmore Investment Trust that they sold in January 2010 for about £30,000 (about $42,200 in U.S. dollars at current exchange rates).

"I paid (UK) income tax on the dividends. There was a profit on it, but it was less than the capital gains tax allowance, so I didn't pay capital gains tax," he told the British broadcaster.

There have been reports that, according to the International Consortium of Investigative Journalists, Cameron's father, Ian, used the services of the Mossack Fonseca law firm to avoid having his Blairmore Holdings Inc. pay any UK taxes.

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