Officials in Brazil are investigating a helicopter crash that killed six people, including American singer Oliver Tree, after two helicopters collided midair over a suburb of Rio de Janeiro.
Police confirmed the death of Argentine content creator Gaspar Prim Díaz, Lucas Vignale, and three Brazilians, while the body of one foreigner remains unidentified.
Human error might have led to the collision, and authorities are investigating whether air traffic controllers or one of the pilots was responsible.
Tree, 32, was visiting Rio as part of a world tour and had gained a large following online, with many celebrities paying tribute to him after his death.
