WDBJ slayings: Gunman Vester Flanagan packed disguises for getaway

(CNN)He carefully choreographed the slaying of the two journalists for maximum shock value. And, judging from the items found in his car, he took equally meticulous steps to get away with it.

But a text message to a friend may have been Vester Lee Flanagan's undoing.

A search warrant document that CNN obtained Thursday shows the lengths Flanagan went to avoid getting caught after gunning down reporter Alison Parker and her cameraman, Adam Ward, on live TV.

The clues come from inside the rental car he used for his getaway, a Chevrolet Sonic.

Inside the subcompact four-door sedan -- a far cry from his normal ride, a 2009 Ford Mustang -- police found a wig, a black hat, a shawl, sunglasses and a to-do list. Police also found three license plates inside.

And the use of a rental car was no last-minute decision by Flanagan. He rented it weeks before the shooting.

Despite the careful planning by Flanagan, it appears he helped tip off authorities, at least indirectly.

Text message tipoff

The tidbit of information is in an affidavit for the search warrant.

"Through the course of investigation, investigators identified Vestor Lee Flanagan II as a person of interest based upon a text message to a friend making reference to having done something stupid," the document said.

What police did with the information isn't spelled out, but the text would have given them Flanagan's cell phone number, and with it they could have tracked his signal.

Virginia State Police spotted the rental car on Interstate 66.

A trooper tried to pull Flanagan over, police said, but he refused to stop and sped away before running off the road and crashing into an embankment.

Troopers found Flanagan inside with a self-inflicted gunshot wound.

History of troubled mental state

By now, it is well known what may have spurred Flanagan to do what he did.

The warning signs stretch back at least as far as 2000, 12 years before Flanagan was hired at -- and fired from -- WDBJ, the station where Parker and Ward worked. In incident after incident, Flanagan's deeply troubled mental state was on full display.

New details on gunman's troubled past at TV station 03:41

-- In 2000, he was fired from WTWC in Tallahassee, Florida. The station said it was for "poor performance," "misbehavior with regards to co-workers" and his "use of profanity on the premises." Flanagan alleged a producer called him a "monkey," and because he complained, the station retaliated. 
"He was very angry and troubled by a lot of things that had happened to him at work," said Marie Mattox, the lawyer who represented him in a suit he filed against the station. "And I was concerned about just his mental status and whether he needed counseling."

CNN couldn't find any indication that he did. (The suit was settled).

-- Flanagan bounced around to a number of different news stations, landing at WDBJ in Virginia in 2012. There, he had run-ins with many co-workers and was a poor performer, leading his bosses to refer him to the company's employee assistance program.

"We made it mandatory that he seek help from our employee assistance program. Many companies have them. They provide counseling and other services and we made it mandatory that he do that," WDBJ's general manager Jeff Marks said.

The final warning for the reporter came in December 2012, and he was fired in February 2013. Before police walked him out of the building, Flanagan handed his manager a small wooden cross and said, "You'll need this."

Virginia gunman road rage incident caught on tape 02:32

-- Earlier this summer, Flanagan was involved in a road rage incident. Brandon Foster posted the video of the July 6 encounter on YouTube after Wednesday's shooting. "I called this man out at a red light for driving like a maniac," Foster said. "He then followed me to my destination driving recklessly, and stopping traffic to continue the argument." There was no violence and no charges were filed.

-- After the shooting Wednesday, Flanagan sent a disjointed 23-page fax to ABC News chronicling, what be perceived as, grievances dating all the way to first grade. He said he's been targeted his whole life by white females and black males. He cited seemingly innocuous comments as discriminatory, such as "an intern asking where I would 'swing by' for lunch."

"The average person would not perceive those everyday comments as insulting or injustices," Mary Ellen O'Toole, a former FBI profiler. "But clearly, he does. His belief system is so rigid that there'd be no way you'd get through to him. No way."

What now?

But all of those things come in hindsight.

No one, it appears, thought that Flanagan would go to the terrible length he did this week. No one picked up on what he said he felt -- that he was a human powder keg "just waiting to go boom."

So what now?

After the shootings, WDBJ executives struggled to say what they could have done differently with the troubled employee.

"There were probably things we can do," Marks said. "We can probably screen more, but by and large we get great employees here. One is going to slip through the cracks every now and then."

Parker's father, Andy, said there is another thing that ought to be done: stiffer gun control measures

Anguished fathers support Andy Parker 06:40

Andy Parker told CNN's Anderson Cooper on Thursday night he will honor his daughter's memory by lobbying for laws that will make it harder for the mentally ill to purchase firearms. It was not clear whether Flanagan had been diagnosed with a mental illness.

"After Sandy Hook, and the theater shootings, everybody thought, gosh this is terrible," he said. "We have got to do something to keep people that are mentally disturbed, we got to keep them away from guns and having the ability to get guns."