Two helicopters collide mid-air over Rio de Janeiro, Brazil, crashing in the city’s western zone and killing all six people aboard, multiple outlets report. Firefighters say the collision occurs on Sunday morning, when the two aircraft come together and both subsequently fall to the ground in the western part of the city. The reports consistently state that there are no survivors among the six passengers and/or crew. While the coverage does not provide detailed information about the operators, flight plans, or the cause of the collision, the accounts agree on the basic facts: the incident involves two helicopters, the crash happens over Rio de Janeiro, and the resulting crash site is in the city’s western area. Emergency services are described as responding, with firefighters quoted or referenced as confirming the number of fatalities. At this stage, the available information focuses on the immediate outcome of the collision and the confirmation that all aboard were killed. Authorities have not been cited in the excerpts as releasing a definitive cause.