A Delta Air Lines pilot was taken into custody by federal agents shortly after landing at the San Francisco International Airport on Saturday, reportedly leaving both passengers and the plane’s lead pilot stunned.

The pilot was arrested on charges of child sexual abuse material by agents with U.S. Immigration and Customs Enforcement’s Homeland Security Investigations (HSI), a Homeland Security spokesperson told HuffPost on Monday, without offering further comment.

A Delta spokesperson did not immediately respond to HuffPost’s request for comment.

Flight 2809 from Minneapolis had just landed at the airport, around 9:35 p.m., when agents entered the plane, the San Francisco Chronicle reported.

“A group of people with badges, guns, and different agency vests/markings were pushing their

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