Update July 2nd: One of the little children has died and Kinner has been charged with murder.
The allegedly unprovoked attack happened yesterday at a housing complex that is popular with resettlement agencies in Idaho.

We’ll see how this strange story evolves tomorrow, but I wanted to get at least this bare bones story up today.
I read several stories at major US media outlets, but none had information that Heavy.com is reporting.
Here is a bit of their detailed account of what police think happened.  No motive has been discovered at this time.

From Heavy.com:

Boise Stabbing: Some Refugee Families Victims in Knife Attack

 

Timmy Earl Kinner, a 30-year-old Los Angeles man, is accused of attacking nine people, including some refugee families, with a knife at a Boise, Idaho apartment complex. It’s believed six of the victims were children.

Kinner is accused of targeting children at a 3-year-old’s birthday party. “The level of some of the injuries will be negative in a life-altering way” for some of the victims, said the police chief.

“Preliminary evidence shows the suspect was a temporary resident at the apartment complex on Wylie Ln and State St. until he was asked to leave on Friday.

The suspect, Timmy Kinner, is not a refugee,” police said in a news release on July 1, 2018. “The suspect’s exact motives and reasons for attacking specific individuals is still under investigation.” Jail records show that Kinner is accused of multiple counts of injury to a child and aggravated battery.

The attack, which the police chief described as involving the highest number of people wounded in a single incident in the city’s history, occurred on the evening of June 30, 2018. The motive was not yet clear, but the police chief said it appeared the attacker struck without provocation, and police were not aware of any tie between the suspect and victims.

Boise has long been known as a magnet city for refugees; in fact, a National Geographic article in 2016 called it “Boise, Idaho, A Global Home for Refugees.” According to the City of Boise, the U.S. State Department gave Boise the designation of “a Refugee Resettlement Community.”

[….]

He said that children “from different continents” were sitting together at a small child’s birthday party when the attack occurred, and he urged people to help the Boise refugee community.

The attacker briefly fled the scene before being captured, and multiple officers responded to the scene.

[….]

Idaho’s refugee population has varied over the years. In the 2000s, according to Idaho Office for Refugees, “recent arrivals include a large number of individuals from Iraq, Congo, Burma, Bhutan, Afghanistan, and Somalia.” The refugee population in the state has shifted over the years, beginning mostly with refugees from Southeast Asia and Eastern Europe in the 1980s.

More here.  
See my extensive archive on Idaho here.
More tomorrow (maybe) on this very bizarre story.