US alt-pop singer Oliver Tree was among six people killed in a mid-air helicopter collision in Brazil on 14 June, according to a police source, in a tragedy that has shocked fans and prompted urgent questions about the aircraft involved and how the crash unfolded over Rio de Janeiro.
The incident occurred in the western suburb of Recreio dos Bandeirantes, where two helicopters collided mid-air before crashing into the car park of an electric vehicle dealership. The impact triggered a large fire that engulfed around 20 cars, according to firefighters at the scene.
