A federal air marshal, accused of taking photographs up women’s skirts while they boarded the aircraft, was arrested at Nashville International Airport on Thursday after a witness notified a flight attendant about his activities, reports said.

Adam Bartsch, 28, was on duty on Southwest Airline Flight 3132 on Thursday when the incident occurred. A passenger who noticed his disorderly conduct notified authorities and he was immediately taken off the flight, Associated Press reported.

Bartsch was handed over to airport police officials, and he admitted to taking the pictures. NBC News reported that he was released on bond pending a hearing Nov. 14 in Nashville General Sessions Court.

"We removed a passenger from Flight No. 3132 from Nashville to Tampa prior to departure due to a Customer concern that was brought to our attention," Southwest said in a statement, cited by NBC News. "We turned the matter over to local law enforcement, and the passenger did not travel as scheduled."

According to reports, the flight was delayed for about an hour.

The Transportation Security Administration, or TSA, which is responsible for passenger security, is assisting with the investigation and issued a statement saying Bartsch’s employment is in the process of being terminated or suspended.

"TSA does not tolerate criminal behaviour,” the statement cited by Local8now.com said. “The agency has removed this individual from their current duties and is in the process of suspending or terminating their employment. TSA is cooperating fully with investigators."

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