known as frankie boy was thought to be the acting boss of the gambino crime family. police have someone in connection with this killing, sources tell cnn that the crime does not appear to be mob related. joining us now is palo sandoval. this has nothing to do with the mob? he was gunned down outside his staten island home. police were initially concerned we could potentially see a repeat of the brazen mafia violence we saw decades ago. according to information that my colleague brynn gingrass is hearing from a police source, this investigation could be taking a very different turn. often times the first story is not the final story. reporter: it s looking less likely that the murder of frank cali was a mob hit. instead it could be the result of a personal feud.