Srilanka, Aug. 9 -- 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.

Saturday's crash involved a pilot and three Colombian women who were members of the same family.

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. He even suggested such flights could be suspended "for a week or two", as new safety measures are implemented.

"My solidarity to the families of the victims of the helicopter ac...