American singer Oliver Tree was killed along with five others when two helicopters collided mid-air in Rio de Janeiro, Brazil. | World News

Two helicopters flying over Rio de Janeiro collided in mid-air on Sunday morning and crashed into an urban area of the city, in an accident that left six people dead, the fire…

Two helicopters have collided over Rio de Janeiro, crashing in the city’s western zone and killing all six aboard. The crash happened Sunday morning.