Police Chief Jeff Bliemeister on Thursday declined to provide further details about the intruders who broke into a north Lincoln home and shot a mother and grandmother early Tuesday.
Bliemeister cited the need to protect investigative details in the case because investigators don't think the attack was random.
At least two intruders broke into the home at 1950 Fairfield St. at about 3:30 a.m. and left following the gunfire that killed 36-year-old Jessica Brandon, the chief said.
Persons of interest are still being looked at to assess what role, if any, they had in her killing, Bliemeister said.
No suspects have been named.
Police still have a presence in the neighborhood even though they have finished their primary search of the home, he said.
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They may search it again should the autopsy scheduled in Omaha or a review of the vast amount of video footage from surveillance cameras at the home and in the neighborhood uncover any "investigative leads," the chief said.
Investigators are also reviewing the accounts from many of the six other people who were in the home at the time of the shooting, he said.
That included Brandon's fiance, his mother and several children, the chief said.
"The cooperation has been outstanding," Bliemeister said at a news conference Thursday. "Unfortunately some of the main witnesses are teenagers or young children, and the tragedy that they had to experience as a result of this is just horrible."
Police ask anyone with information on the shooting to call 402-441-6000 or make an anonymous report to Crimestoppers at 402-475-3600.