The driver of a vehicle for President Trump’s motorcade was detained Monday after security agents found a gun in his baggage.

The gun was discovered during a security screening of the vehicle in a parking lot across the street from Mar-a-Lago, the president’s private club in Palm Beach, Florida.

The man, who was not identified, told authorities that he forgot to leave the personal firearm in his personal vehicle before entering the van that was to be part of Mr. Trump’s motorcade, according to pool reporter Jordan Fabian of The Hill.

The driver was to be operating one of the press vans. Typically such drivers are volunteers, not government employees or members of the media.

“White House staff said all drivers were replaced after the incident,” the pool report stated. “When press loaded back into vans, driver was being questioned by an officer.”

The driver was not allowed onto club property, so a White House staffer drove the press van instead.