A helicopter collision in Rio de Janeiro has resulted in the deaths of all occupants from both aircraft. The incident occurred with no survivors reported from either helicopter involved. One of the helicopters exploded upon impact, igniting a fire that spread to nearby electric cars. Authorities are currently investigating the cause of the crash and working to contain the resulting blaze. The location of the collision has not been specified, but emergency services were dispatched immediately. This event marks a significant aviation incident for the city of Rio de Janeiro, prompting questions about flight safety protocols. Further details are expected as the investigation progresses.