American musician Oliver Tree said to have died in helicopter collision in Brazil

A total of six people died when two helicopters collided in mid-air on Sunday morning over a suburb of Rio de Janeiro.

Singer and internet personality Oliver Tree is said to be on a list of those killed, according to a police source. Also on the same helicopter were a Brazilian music producer, an Argentine video director and Argentine YouTuber "Gaspi".

The deceased have not yet been formally identified, as they were severely burned in the crash.

The helicopters crashed into a car park, setting cars on fire, according to local rescue services.

One of the helicopters had five people on board, the other had only the pilot. No one survived the crash.