MONETA, Va.-- The suspect in today's killings of two WDBJ journalists shot himself after authorities confronted him on Interstate 66 in Virginia. Virginia Public Safety and Homeland Security Brian Moran told WTVR CBS 6 senior reporter Wayne Covil that suspect Vester L. Flanagan has died.
Multiple jurisdictions worked with Virginia State Police to track Flanagan, a former WDBJ employee.
Shortly before 11:30 a.m., Virginia State Police spotted the suspect vehicle headed eastbound on Interstate 66. A trooper initiated a traffic stop on the suspect vehicle, which sped away from the trooper.
Minutes later, the driver ran off the road and crashed. The troopers approached the vehicle and found the male driver suffering from a gunshot wound. Police said he was transported to a nearby hospital for treatment of life-threatening injuries.
Five agonizing hours elapsed between the point that two WDBJ employees -- a reporter and a photographer -- were murdered on-air while reporting on a feature story Wednesday morning, and news that the threat was over.
Flanagan worked at WDBJ as a reporter for about a year using the on-air name, Bryce Williams, according to a former WDBJ employee.
Flanagan was fired from the station though the reason was not made public, the ex-employee said.
ABC News reported that it has received a fax containing a 23-page manifesto from someone named Bryce Williams. The document has been handed over to investigators, ABC said.
Two videos posted on a Twitter account under the name, Bryce Williams, show someone walking up to the WDBJ news crew and pointing a gun at them.
Another tweet says, "I filmed the shooting." The Facebook and Twitter account were suspended shortly after the tweets.
One of the videos shows the gunman approaching WDBJ reporter Alison Parker and photographer Adam Ward as Parker conducted a routine interview about a local story outside Moneta, Virginia.
Ward's back is to the gunman. Parker is in profile, and the interviewee is facing the gunman. The shooter appears to take his time aiming the gun, presenting it and then withdrawing it, before composing the angle of his video. He opens fire on Parker first. Both Parker and the interviewee scream.
On air, the audience saw the camera fall to the ground and caught the briefest glimpse of a man who appeared to point a gun toward the downed cameraman.
The station cut away to a shocked anchor, Kimberly McBroom, back in the studio.
Parker, 24, and photographer Adam Ward, 27, were killed at Bridgewater Plaza near Moneta, the station reported later.
Ward's fiancée was in the control room and saw the shooting, WDBJ General Manager Jeff Marks told CNN.
The woman being interviewed, Vicki Gardner, executive director of the Smith Mountain Lake Regional Chamber of Commerce, was shot in the back and is in surgery, said Barb Nocera, the chamber's special projects manager said.
The gunman is believed to have fired six or seven times, Marks said.
"Our hearts are broken," Marks also said. "We have people walking around here in tears, lots of hugs."
McBroom described Parker as a "rock star" and said, "You throw anything at that girl and she could do it."
Another journalist at the anchor's desk said Ward was engaged to be married to morning show producer at WDBJ, Melissa Ott, and Ward recently told her, "I'm going to get out of news. I think I'm going to do something else."
Ward joined WDBJ in 2011 after graduating from Virginia Tech with a degree in communication and media studies, according to his Facebook page. He enrolled at the university in 2007, the same year a gunman went on a deadly rampage, leaving 32 people dead.
In April, days before the eighth anniversary of the campus massacre, Ward changed his Facebook profile photo to an image of the Virginia Tech logo with a back ribbon.
Parker was the morning reporter for the Roanoke station and a native of Virginia, having spent most of her life outside Martinsville. She started with WDBJ as an intern, her biography on the station's website says.
She previously worked with another CNN affiliate, WCTI-TV, in Jacksonville, North Carolina, near Marine Corps Base Camp Lejeune.
She was a graduate of James Madison University's School of Media Arts and Design in Harrisonburg, Virginia.
Chris Hurst, a reporter for the station, tweeted that he and Parker "were very much in love" and had just moved in together after dating nine months, "the best nine months of our lives. We wanted to get married. We just celebrated her 24th birthday."
He continued, "She was the most radiant woman I ever met. And for some reason she loved me back. She loved her family, her parents and her brother."
Hurst described himself as "numb."
Parker and Ward worked together every day, Hurst tweeted. "They were a team. I am heartbroken for his fiancee," he wrote.
"You know, you send people into war zones, you send people into dangerous situations and into riots, and you worry that they are going to get hurt. You send somebody out to do a story on tourism and -- how can you expect something like this to happen?" Marks told CNN.
A local pastor, "a friend of the newsroom," is at the station, consoling Parker's and Ward's co-workers, he said.
***reporting from CNN wire contributed to this article***