"Lula is not guilty. And Brazilian people will be able to save him in a democratic way in 2018," Rousseff said on Twitter.
Lula da Silva was also banned from occupying any official positions for 19 years, which undermines his plans to run for presidency in 2018, and was fined $205,000. The former president is reportedly going to appeal to the court's decision.
In 2014, it was revealed that businesses paid more than $2 billion in bribes to sign contracts with Petrobras and obtain projects which later increased in cost. The scandal triggered a large-scale inquiry and discontent which were partly responsible for the impeachment of Rousseff who headed the company in 2003-2010.