Hello there! During my vacation in Brazil I flew my drone several times without any issue. On my last day of my vacation, I decided to fly it one more time. My drone was in the air about 8 or 9 floors, and approximately 800 meters from me. I received a message on the cellular "forced landing" It immediately started going down and I tried to bring it back, but the drone was not making connection with the controller. So the drone went straight to a busy street and it was crashed by a vehicle. Now I contact the DJI and told them what happened. They asked me to send the drone and the controller and i sent both. Now I have to wait to see what exactly happened. Does anyone has any experience about this ? Forced landing? What causes the drone to execute it?