I talked to the police yesterday, and they have a good indication who was resposible, a gang of professional Bulgarian burglars, mobsters, that plague the area, they have inside information and know exactly where to hit and when..
Some months ago, acquaintances of my parents had just left for vacation in the Mediterranean, the same evening their daughter was watering the flowers when she saw 5 masked men walking around the front yard. They quickly went away when they saw her - the next morning she found the house burglarized and totally devastated inside. They don't care about cameras and witnesses, as nobody can trace them to Eastern Europe. When the elderly couple came home and the daughter had to tell them, the man was hospitalized due to a circulatory collapse.