A man killed by explosions outside of Brazil's Supreme Court in Brasilia on Wednesday night is suspected to have been trying to launch an attack.

A man killed himself with a bomb outside Brazil's Supreme Court after trying to enter the building on Wednesday, officials said, stirring security concerns before the country hosts global leaders from the Group of 20 major economies.

A man carrying explosives died in a blast as he attempted to attack Brazil’s Supreme Court on Wednesday, police said, days before the country hosts the G20 summit.