KEY POINTS
  • The ETF that tracks Brazilian stocks had its worst day in nearly two years.
  • Ex-president Michel Temer was arrested on Thursday, with prosecutors alleging he was the head of a "criminal organization" that took more than $470 million in bribes or kickbacks.
  • It comes as current President Jair Bolsonaro tries to push forward major changes to the country's pension system, which investors largely bet will happen.
Brazil's ex-President Michel Temer (3rd L) is seen at the Federal Police headquarters in Rio de Janeiro, Brazil March 21, 2019.

Brazilian stocks fell sharply on Friday as the arrest of the country's former president, Michel Temer, sparked worries that government debate over key fiscal reforms may be delayed.

The iShares MSCI Brazil ETF (EWZ) dropped 6 percent and posted its worst day since May 18, 2017, when it fell 16.3 percent. The Bovespa index, Brazil's benchmark index, fell about 3.3 percent after hitting an all-time high earlier this week.