Friday morning wearing camouflage battle dress uniform and opened fire, a law enforcement source tells CBS News Senior Correspondent John Miller.
Early indications are that the shooter was targeting TSA employees and multiple victims are down, according to the source.
Preliminary information indicates one TSA employee is dead and four other people are wounded, CBS News has learned.
There are conflicting reports on the suspect.
According to CBS Los Angeles, the gunman, who reportedly had a high-powered rifle, was shot and secured by law enforcement personnel.
A large box of ammunition has been found at the scene, according to a law enforcement official.
LAPD Bomb Squad is reportedly on the scene trying to clear suspicious packages.
Passengers reported being evacuated from the terminal sometime after 9 a.m.
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