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 Maj. Walter Evans, the head of a task force looking into the murders, says information started pouring in shortly after that.