Happening Today: Stephen Paddock, California Wildfires, Texas Tech, First Lady

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1,000 Leads Later, Authorities Still Stumped by Vegas Gunman

More than a week after the deadliest mass shooting in modern U.S. history investigators are stumped about the key question: What led a 64-year-old high-stakes gambler to kill 58 people and wound hundreds of others at a country music concert? It's an answer they may never find. The FBI and Las Vegas police have sorted through more than a thousand leads and examined Stephen Paddock's politics, finances, any possible terrorist radicalization and his social behavior. They had repeatedly searched his homes and interviewed his brother, girlfriend and others he's done business with. But the typical investigative avenues that have helped uncover the motive in past shootings have yielded few clues about Paddock, a professional gambler who spent nearly every waking hour playing video poker at casinos. That closeted existence has covered the trail for investigators. The FBI has brought in behavioral profilers as they continue questioning Paddock's live-in girlfriend, Marilou Danley, about his gun purchases and what she may have noticed about his behavior, an official said.

Texas Tech Officer Shot, Killed; Student Suspect in Custody, Officials Say

A campus police officer was shot and killed at Texas Tech, prompting a lockdown that ended with the suspect's arrest. A call for a student "welfare check" brought campus officers to a room where they found drugs and drug paraphernalia, leading the officers to bring the student to the station for a standard debriefing, a spokesman for the school said in a statement. At campus police station, the student pulled out a gun and shot an officer in the head, killing him, according to the statement from university spokesman Chris Cook. The victim has not been identified. The suspect has been identified as 19-year-old Hollis Daniels, Cook said. The suspect ran from the scene, authorities said, and the Lubbock SWAT team helped search for him. He was caught by campus police about an hour and a half later, and the lockdown was lifted shortly after. The school said classes would resume as scheduled.

“Inferno”: Thousands Flee Wildfires in Wine Country

Thousands of residents of wine country were sent fleeing from their homes as more than a dozen wind-driven wildfires erupted across Northern California, wiping out at least 1,500 structures and sending the smell of smoke as far as San Francisco, Oakland and San Jose. At least 11 people have died and two people have suffered serious injuries as a result of the blazes, according to Cal Fire. Seven deaths occurred in the Tubbs Fire in Sonoma County, two deaths occurred in the Atlas Fire in Napa County, and one death was reported in the fire that ignited in Mendocino County, Cal Fire said. A Sonoma County spokesman said the county has received more than 100 missing-persons reports. An estimated 20,000 people have been evacuated, Cal Fire Director Ken Pimlott said. He added that the estimates of destroyed structures are very conservative. Pimlott said the fires are burning across an eight-county swath of Northern California, including Napa, Sonoma and Yuba counties. Cal Fire estimates that a total of at least 73,000 acres have been scorched.

As Trump Challenges Iran Nuclear Deal, Those in Tehran Worry

As President Trump threatens the Iran nuclear deal, those living in Tehran feel that an accord they have yet to benefit from may already be doomed, hardening their skepticism about America. Trump is set to deliver a speech on Iran this week in which he is expected to decline to certify Iran's compliance in the landmark 2015 agreement, referring it to Congress, and perhaps targeting the country's paramilitary Revolutionary Guard with new sanctions. In the streets of the Iranian capital, The Associated Press spoke to a series of people about the nuclear deal: students and teachers, young and old, men in fashionable clothes and women in chadors. Nearly all had the same concerns: Benefits from the 2015 accord have yet to reach Iran's 80 million people despite its government signing billion-dollar airplane deals. Inflation remains high, job opportunities stay low. They also said Trump's threats fall in line with what Iranian leaders since the 1979 Islamic Revolution have warned: Americans can't be trusted. That feeling has unified hard-liners supporting Iran's clerically overseen government, as well as reformists seeking to change it.

Ivana: I'm the Real First Lady; Melania: No, You're Not

Melania Trump's spokeswoman defended the first lady following comments made by the president's first wife, Ivana Trump, claiming she's the one true first lady of this administration. Spokeswoman Stephanie Grisham said on behalf of Melania Trump that the first lady "has made the White House a home for Barron and The President. She loves living in Washington, D.C., and is honored by her role as First Lady of the United States." During a recent interview with "Good Morning America," Ivana told the hosts she has the "direct number to the White House" but she just doesn't really use it. The statement from Melania's spokeswoman dismissed Ivana's claims, saying Melania is honored to be in her position and plans to use it for good causes. "[Melania] plans to use her title and role to help children, not sell books. There is clearly no substance to this statement from an ex. Unfortunately, only attention seeking and self-serving noise." Still, Ivana doesn't seem jealous of Melania's position. Ivana and the president were married from 1977 to 1992 and had three children together: Donald Trump Jr., Ivanka Trump and Eric Trump. When asked if she ever thought her ex would be president, Ivana said she did.