Answers are beginning to emerge about what caused a mysterious oil spill that has stained Brazil's coastline for the last month.
Officials in the country say a Greek-flagged tanker is likely to be behind it.
Police in Rio de Janeiro raided the headquarters of a company that was linked to the marine vessel.
The spill has affected marine life in more than 2,500 km of the country's beaches and coastlines.

Kuwait arrests Hezbollah-linked cell in security crackdown
Drone attack hits hotel in Baghdad Green Zone
Vance plays down differences with Trump on Iran war
US allies rebuff Trump's request for support in Strait of Hormuz
Pakistan-bound oil tanker passes through Hormuz Strait amid Iran war
