The body of the 81 year old was found by relatives and Fire Department.
The victim lived with his son Ademir Oliveira dos Santos of 39, who came home and saw some shopping on the table, a sheet covering the sofa was out of place and had bloodstains on it, and beside it was a gun he kept for many years was not in the usual place.
When the emergency services arrived they checked the area and spotted something at the bottom of the hole.. It was the 81 year old body.
Police believe robbery was the motive.