Oklahoma City police Capt. Patrick Stewart said the department's tip line has received calls from people offering information. He said Oklahoma City police have not warned neighbors about possible break-ins or a threat to the general public in the area where Julie Mitchell lived. "We're not going door-to-door doing PSAs (public service announcements),” Stewart said. "Right now we're conducting a homicide investigation. If we felt like people were in jeopardy, obviously we would act on that. At this point we don't have a suspect, so there's no reason to knock on doors to alert residents to something.” Oklahoma medical examiner spokeswoman Cherokee Ballard said it could be at least a week before more autopsy information is released. The medical examiner's preliminary report said Mitchell died of multiple blunt force trauma to the head.
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