Update, 12:55 p.m.: Federal authorities are telling news outlets the gunman at LAX was a ticketed passenger entering the airport and not a TSA agent, as was reported earlier.
According to the Los Angeles Times, officials now don't believe the gunman had ever worked for TSA.
Police believe the suspect acted alone and was not tied to any known terrorist group, the L.A. Times said.
Update, 12:30 p.m.: Los Angeles airport police and fire officials said in a press conference at noon that they have treated seven patients and transported six to area hospitals but would not confirm whether there were any fatalities.
Patrick Gannon, chief of security at LAX, said the gunman was shot by authorities but would not give any more information, such as whether he was killed and whether he was a TSA official as has been reported. The FBI is conducting the investigation, he said.
The gunman pulled an assault rifle out of a bag and opened fire in the screening area, then continued shooting well into Terminal 3 before he was shot by Los Angeles Airport police, Gannon said.
11:45 a.m. update: The Los Angeles Times is reporting that the gunman was a TSA employee at the airport. Law enforcement told the Times that the gunman was killed by authorities after he allegedly shot and killed a fellow TSA employee.
LOS ANGELES — Authorities say a suspect is in custody after opening fire at the Los Angeles International Airport and injuring multiple people.
Los Angeles police Officer Norma Eisenman says officers responded to the incident which occurred at 9:30 a.m. today in terminal 3. Multiple people were hit by gunfire, she says but their condition is unknown.
She says the suspect exchanged fire with airport police and was taken into custody. The airport is being swept for precautionary measures and the bomb unit is on scene.
Airport staff evacuated travelers and flights were disrupted nationwide.
— Associated Press