Oliver Tree's mother tributes after helicopter crash

The mother of musician Oliver Tree has publicly mourned her son days after he was killed in a helicopter crash in Brazil. Christine Begin Nickell posted a tribute on Facebook on Thursday, June 18, writing, "Our dear son Oliver, you made this world a better place. We are so proud of you. RIP." She accompanied the message with a childhood photo of the artist.

Oliver Tree, whose full name was Oliver Tree Nickell, died on Sunday, June 14, at the age of 32. He was one of six people killed when two helicopters collided mid-air over the southwest zone of Rio de Janeiro. The aircraft crashed into an electric vehicle dealership, causing a fire. There were no survivors. Authorities confirmed the identification of all victims on Thursday, naming Tree alongside Brazilian DJ Lucas Brito, YouTuber Gaspar "Gaspi" Prim of Argentina, another Argentine passenger, Lucas Vignale, and pilots Alexandre Souza and Charles Marsillac.

The singer was in Brazil as part of his "World's First World Tour," which began in late May in support of his fourth studio album, "Love You Madly Hate You Badly," released in April. He had performed in São Paulo on June 6 and was scheduled to perform next in Lisbon on July...