TUCSON (KGUN9-TV) – What could possibly drive a grandson to allegedly kill his own grandparents? It’s a question many have asked since July.

911: 911, what is your emergency?
Caller: I just came over to my grandparents and something has happened to both of them.
There’s blood everywhere.

It’s hard to imagine something so gruesome, so horrifying happened inside a midtown Tucson home. Mary and Erskin Fulgham were found brutally murdered, stabbed and beaten to death. In a cruel twist, police say their grandson, Kyle Drattlo, and his friends Christopher Terry and Brianna Harding are responsible.

“I kind of suspected it was someone who knew them,” said the couple’s neighbor.

More