Amid protests throughout London against President Donald Trump's state visit to the United Kingdom, the "Chief Mouser" of 10 Downing Street held his own sit-in of sorts.

Larry the Cat, the feline who occupies the British government headquarters, was caught on camera Monday, spotted in the background of photographs and otherwise causing a stir.

One reporter covering the events outside 10 Downing Street shared a picture of Larry lying under Trump's limo and staying put, jokingly calling it a "huge security issue."

"Huge security issue as Larry the Downing St. cat shelters under Donald Trump’s limo 'the Beast' & refuses to move. #TrumpinUK," wrote NBC News' Bill Neely on Twitter.

Broadcasters on Sky News also detailed the moment on air.

More: As Cameron moves out, the cat stays put at 10 Downing Street

When Trump posed for a picture alongside Prime Minister Theresa May and the two world leaders' spouses, Larry sat in the background on a windowsill, seemingly uninterested in the photo op taking place next to him.

The unofficial Twitter account for Larry also shared a photo of the moment, writing, "If you think I’m getting off this windowsill you’ve got another thing coming..."

Larry moved into Number 10 in 2011 after being recruited from Battersea Dogs & Cats Home for his ability to catch rodents.

“Larry spends his days greeting guests to the house, inspecting security defences and testing antique furniture for napping quality,” the U.K. government’s official webpage on the history of 10 Downing Street reads.

“His day-to-day responsibilities also include contemplating a solution to the mouse occupancy of the house. Larry says this is still ‘in tactical planning stage.’”

'David Cameron, you old flirt':Larry the cat tweets about Cameron's exit

Although Larry is the first official cat to hold the title Chief Mouser, cats have occupied government buildings in London since the 1800s.

Follow USA TODAY's Ryan Miller on Twitter @RyanW_Miller