Five people , including the son of the governor of Sao Paulo , have died after a helicopter crashed into a house in the Brazilian city . According to official sources Thomaz Alckmin , son of Geraldo Alckmin , the city governor , was one of the victims after the aircraft came down in a residential neighborhood , . The crash happened in the Carapicuiba area on the outskirts of Sao Paulo at around 5.20pm local time yesterday . Scroll down for video . 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 . It is thought the damaged house had been under construction . It is understood three mechanics were killed . A friend of the younger Mr Alckmin , Carlos Isquerdo , was piloting the helicopter . Television reports showed aerial footage of firefighters working on the crash scene , which was strewn with the shattered remnants of the craft . No one was thought to have been in the house , the roof of which had been devastated by the impact . Officers could be seen evacuating residents from the area . It is also understood the damaged house was under construction . Authorities said they were investigating the cause of the crash . According to reports the aircraft was making a test flight after the exchange of a main rotor blade . It is understood three mechanics , as well as the pilot , were among the dead . Firefighters and policemen set up a cordon in the Sao Paulo off street where the helicopter crashed yesterday . The crash happened in the residential area of Carapicuiba . Authorities said they were investigating the cause .
Thomaz ##quez , son of former mayor Geraldo Alckmin , said to have died . He was on vacation when plane crashed in Carapicuiba area of Sao Paulo . plane was apparently empty of passengers and said to have been unfinished . Three mechanics also said to have died in crash at 5.20pm yesterday .