TIMELINE-Key moments in Brazil corruption probe
By Caroline Stauffer
Feb 22 (Reuters) - Brazilian police said on Monday they obtained an arrest warrant for the architect of President Dilma Rousseff's electoral campaigns, complicating her fight to survive an investigation into her 2014 re-election and stave off impeachment by Congress.
The investigation of campaigner João Santana, known as "the maker of presidents" in Latin America, is part of Brazil's largest-ever corruption investigation, which focuses on state-run oil company Petroleo Brasileiro SA (Petrobras) .
Below are key moments of the investigation.
March 20, 2014
Federal police arrest the former head of Petrobras' refining and supply department, Paulo Roberto Costa, the result of an investigation that started when they noticed Costa had been given a Range Rover car by convicted black-market money changer Alberto Youssef.
Aug. 22, 2014 Continuación...