At least four people have been killed in a helicopter crash in the Brazilian city of Rio de Janeiro, according to a statement from the Colombian consul in the country. They were reportedly on a sightseeing flight over Tijuca National Park, a densely forested, mountainous area on the edge of the city. In the aftermath of the crash, Rio de Janeiro Mayor Eduardo Cavaliere called for more oversight of helicopter flights, a popular tourist activity. “My solidarity to the families of the victims of the helicopter accident that happened today near Vista Chinesa within the Tijuca National Park,” Cavaliere said in a social media post. Tijuca National Park is a top destination in Rio de Janeiro, famous for its Christ the Redeemer statue and sweeping vistas of the coastal city.