UPDATE 2-Brazil's Rousseff attacks leaks after corruption allegations
(Recasts with statements from Rousseff, Amaral, Lula, market reaction)
By Anthony Boadle
BRASILIA, March 3 (Reuters) - Brazilian President Dilma Rousseff lashed out on Thursday at the leaking of testimony to the media after a newsweekly published allegations linking her and her mentor, ex-President Luiz Inacio Lula da Silva, to a giant graft probe roiling Brazil.
The magazine IstoE reported that ruling party Senator Delcidio Amaral, a key legislative ally for Rousseff before he was arrested in November, allegedly tied the president and her predecessor to the scandal engulfing state oil company Petrobras in a 400-page statement made to prosecutors.
In a communique issued by her office, Rousseff condemned the widespread use of leaks as a political weapon.
"Apocryphal, selective and illegal leaks should be repudiated and rigorously investigated because they undermine the law, justice and truth," she said.
If confirmed, the IstoE revelations would complicate efforts by Rousseff, already grappling a deep recession and political gridlock, to weather the kickback probe that has toppled dozens of corporate executives and drawn ever closer to her inner circle.
Amaral said in a statement he could not vouch for the authenticity of documents cited by IstoE, but did not deny seeking leniency from prosecutors in return for information.
Allegations that kickbacks were used to finance Rousseff's 2014 re-election campaign are at the center of a judicial effort to annul her victory. Her campaign strategist is in jail on the suspicion he was paid with graft money. Continuación...