SYDNEY, June 21 (Reuters) - The chair of an Australian senate committee looking into PricewaterhouseCoopers' leak of a confidential government tax plan has called for an international investigation into the matter. Earlier this month, PwC Australia listed in an unpublished letter to the senate committee at least 67 current and former staff who may have known of the 2015 leak of confidential government tax plans. Acting CEO Kristin Stubbins apologised for the leak on behalf of the firm in an open letter last month. The report also called on PwC to cooperate fully with a current Australian Federal Police investigation. ($1 = 1.4778 Australian dollars)Reporting by Lewis Jackson; Editing by Edwina GibbsOur Standards: The Thomson Reuters Trust Principles.

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Persons: Richard Colbeck, PwC, Kristin Stubbins, Lewis Jackson, Edwina Gibbs Organizations: SYDNEY, PricewaterhouseCoopers, Australian Federal Police, Thomson Locations: Australia