The leak led to outcry from activists and local Indigenous organisations, who have for years warned of the impact oil exploration could have on the region’s marine and coastal ecosystems.
Petrobras did not immediately reply to a request for comment.
Petrobras spent years trying to obtain a licence to drill in the region, considered to be its most promising oil frontier due to its shared geology with nearby Guyana where Exxon Mobil is exploring vast oil fields.
(Reporting by Fabio Teixeira and Rodrigo Viga Gaier, Editing by Iñigo Alexander and Nia Williams)
