Late singer Oliver Tree's body returned to US after helicopter crash

American singer-songwriter Oliver Tree, who died at age 32 in a helicopter collision over Rio de Janeiro, has had his remains transported back to California for burial. The crash occurred during his world tour, claiming six lives when two helicopters collided in Brazilian airspace. According to a statement shared on his social media account, Tree's family plans to establish a charitable foundation as outlined in his will prior to his death.