Full coverage: 2016 Rio Olympics

Security forces in Brazil have carried out a drill simulating an attack on a subway station ahead of this year's Summer Olympics.

Dozens of armed military police and members of the Battalion of Special Operations participated in the drill in Rio de Janeiro together with the marines. The training exercise took place after a two-week learning exchange between Brazilian security forces and France's elite police squad, RAID.

Authorities have been conducting security exercises in the run-up to the August launch of the Olympics, which is expected to attract millions of spectators to the country.