five people , including the son of the governor of sao paulo , have died after a helicopter crashed into a house in the brazilian city .
the helicopter came down on a house in the carapicuiba area of sao paulo killing five people , one of whom was reportedly thomaz alckmin , son of sao paulo governor geraldo alckmin .
no one was thought to have been in the house , the roof of which was clearly devastated by the impact .