Two helicopters collided over Rio de Janeiro on Sunday morning and crashed in the city’s western zone, killing all six people aboard, firefighters said.

American singer-songwriter Oliver Tree, who was in Brazil on a world tour, was aboard one of the helicopters that crashed on June 14 in Rio de Janeiro, leaving all occupants dead, a police source told...

Fernandes de Freitas, a tyre repair worker, said he saw one of the helicopters in flames following the midair collision, and noticed that one of the passengers jumped out of the other aircraft, before...