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• NOGALES, Ariz. (AP) -- Officials are working to improve conditions at a makeshift holding center in southern Arizona where immigration authorities are housing hundreds of unaccompanied migrant minors.
• A federal official said that mattresses, portable toilets and showers were brought in Saturday for 700 of the youthful migrants who spent the night sleeping on plastic cots inside the Nogales area center.
• The Homeland Security official told The Associated Press that about 2,000 mattresses had been ordered for the center -- a warehouse that has not been used to shelter people in years.
• With the center lacking some of the basics, federal officials have asked Arizona to immediately ship medical supplies, Gov. Jan Brewer's spokesman Andrew Wilder said.
• The U.S. Department of Homeland Security started flying immigrants in the country illegally to Arizona from the Rio Grande Valley in Texas last month after the number of immigrants -- including more than 48,000 children traveling on their own -- overwhelmed the Border Patrol there.
• ___

• SEATTLE (AP) -- One student talks to 911 operators while a classmate attempts to tend to his bleeding neck and chest. Two other callers after witnessing the shooting at a small Seattle university calmly describe their location, the shooter and the chilling scene.
• "He walked up behind this guy," the caller said, adding moments later: "There were two people standing there. And this guy walked up behind one of them, lifted his rifle and shot directly."
• A day after a lone gunman armed with a shotgun opened fire at Seattle Pacific University, Seattle police released three 911 calls recorded shortly after the shooting. The calls reflect a mix of shock, calmness and swift action by students, witnesses and faculty.
• The 911 calls show "the remarkable calm and resourcefulness of students, fac

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