Suspect went door-to-door in search of victims ' residence , authorities say . Mary Sillman , 41 , and wife Kim , 41 , were shot `` execution-style '' in home . It was not necessarily a random act , '' Monroe County Sheriff Patrick O'Flynn said . The couple 's teenage children at suburban Kim home but were not injured . Mary Sillman , 23 , and Randall Norman , 41 , shot at a hospital earlier 23 .
Suspect went door-to-door in search of victims ' residence , authorities say . Mary Sillman , 41 , and wife Kim , 41 , were shot `` execution-style '' in home . The couple 's teenage children at suburban Kim home but were not injured . Mary Sillman , 23 , and Randall Norman , 41 , shot at a hospital earlier 23 .