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. Rio de Janeiro’s Military Fire Department reports that one helicopter crashed on a car dealership, igniting a fire among several parked electric vehicles. The fire was extinguished. Officials say an investigation is underway to determine the cause of the collision. Police said that American singer and comedian Oliver Tree was on the list of passengers handed to aviation authorities, but have not been able to identify the bodies of those killed in the crash.