5 Things to Know This Morning

— -- Your look at the five biggest and most buzz-worthy stories of the morning.

1. Deadly Tornadoes, Storms Sweep Through Oklahoma

At least one person was killed as tornadoes and severe storms swept through northeast Oklahoma Wednesday evening.

One person was killed and several others injured at a mobile home park in Sand Springs, about seven miles west of Tulsa, after a possible tornado formed nearby, said the Tulsa County Sheriff's Office. Some 36,500 power outages had been reported in northeast Oklahoma as of 3:30 a.m. Thursday morning local time.

Another possible tornado briefly touched down in Moore, about 11 miles south of Oklahoma City, reports KOCO. A radio tower was toppled and a few roofs were taken off homes, but no injuries were immediately reported, said a spokesperson for the city. School was cancelled Thursday because of damage across the district, Moore Public Schools said on its Facebook page.

2. Germanwings Pilot Locked Out of Cockpit Before Crash in France: Report

One of the pilots of the Germanwings flight that crashed in the French Alps may have been locked out of the cockpit, a senior military official involved in the investigation told The New York Times.

The official said that the audio on the cockpit voice recorder indicated one of the pilots was outside of the cockpit and unable to re-enter, according to the paper. The unnamed official described hearing the pilot unable to re-enter the cockpit lightly knocked on the door at first - before pounding on it.

"You can hear he is trying to smash the door down," he told the Times.

ABC News was unable to independently confirm the report.

3. 'No Evidence' California Physical Therapist Was Abducted, Say Police

Police in Vallejo, California, have found "no evidence to support the claims" that a physical therapist was abducted from a home there before she was found alive two days later and more than 400 miles away.

Denise Huskins was found in Huntington Beach, California, Wednesday morning, police said. Her father, Mike Huskins, told ABC News that his daughter called him from Huntington Beach to say she was safe.

Vallejo police said that, through family members, Huskins had promised to speak with investigators but as of late Wednesday they were unable to contact her or her family. Police said she has since retained an attorney.

“All indications initially were that she would be cooperative with the investigation,” Vallejo Police Lieutenant Kenny Park said during a news conference Wednesday night. But, “as of right now, we have not heard from Ms. Huskins.”

4. Zayn Malik's Leaving One Direction to Fans' Crushing Disappointment

One Direction fans basically lost it after Zayn Malik announced earlier today he is leaving the English-Irish boy band.

"My life with One Direction has been more than I could ever have imagined,” the singer, 22, wrote on Facebook. “But, after five years, I feel like it is now the right time for me to leave the band.”

The instant fallout includes, on Twitter alone, three trending phrases, including #ByeZayn. Some fans ever changed their Twitter handles to "Always, Zayn."

5. Astronaut Scott Kelly Prepares for a Pioneering Year in Space on ISS

Astronaut Scott Kelly is poised to break the record for time in space for a U.S. Astronaut when he launches to the International Space Station this week.

That’s a year with no hot showers, cold beers or the touch of his family. Kelly’s girlfriend Amiko Kauderer said she can’t call him, but he can call her, so will keep her cell phone close. It will be tough, but she said the reunion when he comes back will be special.

"For me it’s like the most romantic long-distance relationship ever," Kauderer said.

There are some amenities on the space station -- the views are out of this world, zero gravity gymnastics, and being an astronaut is still an elite job. Kelly knows that duty on the space station can mean fixing the toilet one week and being out on a spacewalk the next week.

Scott, 51, and his twin brother, retired astronaut Mark, will both be human guinea pigs. NASA will be comparing what happens to Scott’s body and brain to those of his brother Mark, while Mark is on the ground.