Oliver Tree, the California-born singer-songwriter and rapper known for tracks like "Life Goes On," "When I'm Down" and "Miss You," died in a helicopter crash in Rio de Janeiro, according to CNN Brazil.

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

American singer Oliver Tree was among those listed on the passenger list filed with aviation authorities for one of the helicopters that crashed into the parking lot of a car dealership, although poli...