Nicholas Fernandez, 29, was arrested on a charge of voyeurism Tuesday, Seattle police said in an arrest report. The incident occurred on an escalator, and not in a security line.
"TSA does not tolerate illegal, unethical or immoral conduct," a spokesperson for the TSA said in a statement.
"When such conduct is alleged, TSA investigates it thoroughly. When appropriate, TSA requests that it be investigated by a law enforcement authority. When an investigation finds that misconduct has occurred, the appropriate action is taken."
Fernandez has been removed from screening duties and he has been suspended without pay, the agency said.
According to an arrest report, the TSA was investigating information it received that Fernandez, who works at Seattle Tacoma International Airport, might have taken inappropriate photos of women.