Shooting at Los Angeles International Airport wounds TSA agent

(UPI) -- At least one airport worker was killed and three other people were wounded at Los Angeles International Airport Friday when a shooter entered Terminal 3 of the airport and opened fire.

According to NBC News, one TSA employee was killed an another wounded. A Los Angeles Police Department detective confirmed a gunman in custody, a US citizen in his mid-20s, but were not yet releasing his name.

A statement from UCLA Medical Center said one male victim was in critical condition, while two other males were listed as fair. The Los Angeles Fire Department said a total of seven people were treated for injuries, and six were transported to hospitals. The suspect was among the injured, but his condition was not released.

Eyewitnesses describe a man approaching the desk inside the terminal before opening fire.

Officials from LAX said the incident began around 9:30 a.m Pacific. The location or condition of the suspect is unknown, although some reports said he was injured, or in custody. The airport implemented a full ground-stop of all flights.

Terminals 2 and 3 were evacuated when shots rang out at the airport, as was Century Boulevard. Terminal 3 serves Allegiant Air, Frontier, JetBlue, Spirit and Virgin America.

#BREAKING: Photo of alleged gun in #LAX shooting. Passengers told to step around bullet casings. via @pascaljosh pic.twitter.com/x5tcECy169
— Tim Williams (@realtimwilliams) November 1, 2013

LAX shooting: LAPD says 'no mass casualty incident here', scene still active as of 10:30a via @KTLA pic.twitter.com/9dQhDlIZtM
— L.A. Times: L.A. Now (@LANow) November 1, 2013

#LAX: Passengers at Terminal 3 of Los Angeles airport evacuated shortly after 9 am local time pic.twitter.com/HO6uS9L9m7 http://t.co/eUIMXsS0KA
— RT (@RT_com) November 1, 2013

According to reports, ground stop now in effect at LAX after shooting in terminal.
— LAX Airport (@LAX_Official) November 1, 2013

We are being moved to buses to newest annex of airport #lax pic.twitter.com/NdXP9Ei4bD
— Eric Kayne (@photokayne) November 1, 2013

All upper/departures level roadways are temporarily blocked by law enforcement. General public are being held back at law enforcement block
— LAX Airport (@LAX_Official) November 1, 2013