Kinner assaulted the children at the party after he was unable to find the woman, police said, adding his motive was still under investigation. "We haven't had anything involving this amount of victims in a single attack in Boise in the history of the department", Bones said.
Police said officers were dispatched at 8:46 p.m.to a report of a man attacking victims with a knife at the Wylie Street Station Apartments, on Wylie Lane behind a Thriftway Home Center store southeast of Collister Boulevard.
Twelve-year-old Esrom Habte was playing with friends in the late-evening light outside his family's apartment Saturday night when he says he saw a man begin attacking some of his neighbors. When they arrived they found stabbing victims both inside the complex and in the parking lot; Kinner was arrested a short distance away.
Nine victims were located inside and outside the apartments.
The children ran into an apartment and hid in a closet with other children until police told them it was safe to come out, he said. Police Chief William Bones said some of the injured residents included members of the city's refugee community.
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"It's a single evil individual who attacked", Bones said.
Preliminary evidence said Kinner was a temporary resident at the apartment complex and was asked to leave Friday.
Kinner was being held without bail at the Ada County jail on 15 charges, including six of injury to a child and nine of aggravated battery, jail records showed.
Four of the victims are in hospital, according to police.
On Sunday, colorful bouquets rested just outside crime-scene tape.
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Boise Mayor Dave Bieter said in a statement today: "Our city has long stood as a welcoming city - a place of safety and kindness for those fleeing violence and oppression in their homelands. For their prayers for the families".
Asked if there had been fatalities, Bones responded: "At this point we haven't lost anybody, but as I've said, the injuries are very, very serious".
The St. George Police Department, in Utah, verified that in April the department arrested Kinner for theft.
An official from the International Rescue Committee praised Boise for its support of refugees.
'As you can imagine, the Wylie Street Apartment and our community is reeling from this attack, ' he said.
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The pipeline still needs at least 29 federal, state, and local permits. "Approvals are by no means assured", he said. Commissioners were torn about their decision and stressed during an emotional hearing their hands were tied.
Police did not release the names or ages of the victims, but said their age ranges varied dramatically and "it's affected all aspects of the families" who live at the complex.