Police in Tulsa, Okla., say it is much too early in their investigation to describe the murder of three black residents and the wounding of two others as a hate crime. Two men were arrested early Sunday morning and are expected to face charges of first degree murder and shooting with intent to kill.

Soon after Friday's shooting, authorities reached out to the public for help. Police Major Walter Evans, the head of a task force looking into the murders, says information started pouring in shortly after that.

"The crime-stopper tips were the biggest help to us," Evans says. From that, we were able to develop some really suspect information on those two suspects and other associates that were involved with them."