Brazil's currency fell by 0.7 percent after a report in news magazine Epoca saying a close advisor to President Luiz Inacio Lula da Silva's chief of staff had collected campaign funds in return for political favours while working in the Rio de Janeiro state government in 2002.
The Brazilian real was off a hefty 0.73 percent at 2.917 per dollar.
Brazil's leading internationally traded bond, the Global 40, was 1.1 percent weaker at 109.000 amid heavy profit-taking.