Authorities found an anti-government note next to the man who allegedly opened fire at LAX on Friday, according to law enforcement sources.
In the note, Paul Ciancia, 23, expressed “his disappointment with government” and said he had no intent to target or harm people he considered innocent bystanders, one source told The Times.
The source added that during the attack, Ciancia allegedly asked people if they were TSA employees.
“He was only interested in TSA,” the source said.
A federal law enforcement official added that Ciancia “wasn’t a fan of the TSA.”
Leon Saryan of Greenfield, Wisc., told Mikwaukee radio station WTMJ that he was approached by the gunman.
“He looked at me and he said 'TSA?' and I shook my head and he just kept going," he said.
Authorities believe that Ciancia arrived at a TSA screening area in Terminal 3 at 9:20 a.m., pulled a rifle out of his bag and started shooting. He made his way past the security checkpoint into the terminal and continued shooting.
[Updated at 4:20 p.m.: Stephanie Rosemeyer, 26 was in Terminal 3 Friday morning waiting to board a flight to Chicago when she heard airport alarms go off and saw people suddenly start running toward the exits.
At first, she thought a plane had crashed or a fire had broken out. But when she left her seat at Gate 36 to go look, she saw people huddled in the nearby food court. She also saw a man carrying a gun, dressed in all black and wearing a bulletproof vest. He was alone and didn't appear to be law enforcement.
Her gaze met the gunman’s, she said. She gave him a “quizzical” look.
“He looked back at me, and said ‘I don’t like this,’" she said. "I took a step toward him" and he shouted an expletive directed at the TSA.
“I decided to walk away, and then I heard gun shots, and so I walked faster,” she said.
She heard at least five gunshots as the shooter continued to shout about the TSA. She slid behind a wall and moved toward the exit doors at the back of the terminal. She didn’t see anyone get shot, but as she hustled down the stairs she said she heard more gunshots.]
The suspect was eventually shot by authorities elsewhere in the terminal. He was in critical condition.
The attack caused widespread chaos at the airport, with flights delayed and thousand of passengers left stranded on the streets in and around the airport.
Authorities said the gunman fired at several locations in Terminal 3 before police shot him.
The motive for the shooting was unclear. A federal law enforcement official said the gunman was a ticketed passenger entering the airport. Los Angeles Police Department anti-terrorism officials were on the scene, but sources said they believed the suspect acted alone and was not tied to any known terrorist group.
At a news conference, the Los Angeles Fire Departmentsaid it treated seven people at the scene and transported six to local hospitals. The TSA said "multiple" agents were hurt in the incident.