What we know about fatal Brazil helicopter crash; singer Oliver Tree among 6 passengers

American singer and comedian Oliver Tree was listed among the six passengers Sunday in a deadly helicopter crash in Brazil.

American singer and comedian Oliver Tree was listed among the six passengers Sunday in a deadly helicopter crash in Brazil.

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Firefighters said two helicopters collided over Rio De Janeiro and crashed in the city’s western zone. Tree’s name was on a list of passengers handed to aviation authorities, but they have not yet been able to identify any of the bodies, police said.

An investigation into the cause of the crash is ongoing.