Oakland Airport security officer charged with smuggling drugs

Airport passengers arrive at Oakland International Airport from the Oakland Airport Connector from the Coliseum BART Station in Oakland, Calif., on Wednesday, November 25, 2015. Airport passengers arrive at Oakland International Airport from the Oakland Airport Connector from the Coliseum BART Station in Oakland, Calif., on Wednesday, November 25, 2015. Photo: Carlos Avila Gonzalez, The Chronicle Photo: Carlos Avila Gonzalez, The Chronicle Image 1 of / 1 Caption Close Oakland Airport security officer charged with smuggling drugs 1 / 1 Back to Gallery

A security officer at Oakland International Airport has been charged with using her post to help smuggle drugs through the airport for more than two years.

The indictment unsealed Thursday by a federal grand jury alleges that San Mateo resident Kiana Scott Clark, 28, conspired to manipulate X-ray machines at security checkpoints so that her partners could pass through with carry-on bags filled with marijuana. They supposedly operated the scheme from September 2013 until this October, smuggling in over time what the indictment says was “100 kilograms and more of marijuana.”

Clark was arrested Wednesday and had an initial court appearance Thursday at the U.S. District Court in Oakland. She is charged with four counts of conspiracy, two for obstructing the operations of the Transportation Security Administration and two for conspiracy to distribute controlled substances. If convicted, the latter charges come with a minimum prison sentence of five years.

The investigation was conducted by a number of agencies including the FBI and the Alameda County Sheriff’s Office.

This isn’t the only recent batch of criminal indictments tied to alleged drug-running at the airport. In May, baggage handlers then with Southwest Airlines were among 14 people charged with smuggling marijuana through a supposedly secure area of Terminal 2.

John King is a San Francisco Chronicle staff writer. E-mail: jking@sfchronicle.com Twitter: @johnkingsfchron