A Delta Airlines pilot was detained and hauled off a flight by the feds just moments after touching down in San Francisco –shocking passengers and plane crew alike.

The pilot, whose identity hasn’t been released, was arrested after the incoming aircraft landed from Minneapolis and passengers were preparing to deplane just after 9:30 p.m. Saturday.

Some onboard said they were shocked at seeing at least 10 federal agents — including officers from Homeland Security Investigation (HSI)  — suddenly boarding without explanation.

The crew appeared equally in the dark, with the other pilot announcing that he had “no idea what just happened,” passenger Sarah Christianson told the San Francisco Chronicle.  

However, the dramatic arrest was tied to a disturbing investigation into child sexual abuse material, law enforcement sources told Fox Business.

Christenson claimed the agents “stormed the cockpit” and marched the pilot down the jet bridge.

“A group of people with badges, guns, and different agency vests/markings were pushing their way up through the aisle to the cockpit,” the passenger told the San Francisco Chronicle.  

Moments after being led away by the entourage of law enforcement, another group of officers came to cart his bags away, passengers said.

HSI is a division of the Homeland Security’s Immigration and Customs Enforcement (ICE) agency, which has helped lead many of the immigration raids and arrests since President Trump began rolling out a mass crackdown on illegal immigrants.

It wasn’t clear if the arrest was tied to the pilot’s immigration status.

A HSI spokesperson said the federal agency was brought in to help the local sheriff’s office execute an arrest warrant.

“This is an ongoing local investigation with the Contra Costa County Sheriff’s Office,” the spokesperson said.

The Post reached out to the sheriff’s office but didn’t hear back immediately.

Delta Air Lines, meanwhile, declined to comment and deferred questions to law enforcement.