Two helicopters collided in mid-air on Sunday over Recreio dos Bandeirantes, a neighborhood in southwestern Rio de Janeiro. According to Brazilian authorities, all six passengers were killed. According to the American showbiz website TMZ and CNN Brasil, the well-known singer Oliver Tree is among the dead. He was 32 years old. After the collision, one aircraft crashed in a parking lot with electric cars, after which several vehicles went up in flames. The cause of the accident is under investigation.
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