When the scene happened, police and a fire engine were parked next to ambulances and fast reacting cars.
Rafaella Montuori, 20, a designer from Brazil, said she has seen a stretcher with a small stretcher person.
She said, "We were in the elevator and saw security, then everyone came from the tenth floor.
"Everyone shouted, someone said that a child had fallen.
"We went to the restaurant and heard helicopters above, people were crying.