In the past two years, Brazilian Supreme Court Justice Teori Zavascki authorized the investigation of 47 politicians accused of corruption; he sanctioned the first arrest of a sitting congressman since Brazil’s dictatorship; and he suspended the mandate of house speaker Eduardo Cunha, accused of taking $40 million in bribes. So when the twin-engine aircraft spiriting him to a holiday weekend outside Rio de Janeiro crashed last week, killing all aboard, suspicions were rife about the possibility of foul play. The 68-year-old had been preparing to ratify an explosive body of testimony from 77 executives at construction firm Odebrecht, whose damning evidence in Operation Car Wash, Brazil’s $2 billion enquiry into bribes at state oil giant Petrobras, was expected to leave few politicians in Brasília untainted – including, perhaps, President Michael Temer. The death has proven to be fertile ground for conspiracy theorists in a country in which a former president was reportedly assassinated in car accident by the military dictatorship in 1976 and a leading presidential candidate died in a similar light aircraft accident in 2014. Prehn Zavascki, the son of the dead judge, noted that Zavascki and his family had received threats in recent months and said no possibility should be ruled out.