It could be an expat showing pride in their home country or a gag - or maybe it's dictator Kim Jong-un's holiday home or a secret nuclear test site.
Wild and humorous theories are being thrown around after a North Korean flag was raised outside a home in north-east England.
Nobody has a clue why the secretive country's red, blue and white flag went up in a neighbourhood in Ingleby Barwick, Middlesbrough.
Neighbours have been left scratching their heads after seeing the flag flying just yards from a big red bouncy castle, Gazette Live reports.
Nobody has a clue why the red, blue and white flag went up in the neighbourhood
Neighbours say the flag was raised outside a home several days ago
Not even North Korean diplomats could explain why it went up just off Sober Hall Avenue.
Locals jokingly claim it could be anything from a nuclear test site to dictator Kim Jong Un's holiday home.
One neighbour said: "I have absolutely no idea why it is there.
Diplomats at North Korea's London embassy didn't have much to say
"The flag's been up for a couple of weeks ever since someone took over the property but I've not seen anyone really there.
"I think it is quite funny, and I laugh because I can now use it to show me how to get home."
But others were less impressed.
Neighbours have been left scratching their heads after seeing the flag
Another local said: "It's a bit odd if you ask me."
Neighbours claims a St George Cross previously occupied the flag pole before the old occupant moved out.
But Facebook users in Ingleby Barwick are just as puzzled by what has replaced it.
Wild and humorous theories are being thrown around after the flag was raised
One joked it was possibly a "secret launch base" for the for their nuclear weapons programme, amid growing tensions between Pyongyang and the West.
Others speculated it may have something to do with Middlesbrough's brief love affair with the North Korean national football side, who beat Italy in the 1966 World Cup at Ayresome Park.
Diplomats at North Korea's London embassy didn't say much.
An official said: "We don't have any people living in Middlesbrough.
"Why would it be strange anyway for our flag to be up?"
Gazette Live attempted to contact the occupant, but there was no answer.
North Korea tests another missile as projectile fired into sea
The secretive state has defied warnings from the West and UN sanctions
North Korea conducted its latest missile test on Sunday as it fired a ballistic missile into the Sea of Japan off its east coast.
It was the second missile test in a week, with South Korean military officials saying it appeared to be an upgraded, extended-range version of a solid-fuel submarine-launched missile.
The missile flew about 310 miles. The missile fired last week was liquid-fuelled and travelled further before splashing into the sea.
North Korea is working to develop a nuclear-tipped missile capable of hitting the US mainland.
The reclusive state continues to conduct missile tests despite warnings from the West and UN sanctions.