Former U.S. professional basketball star Dennis Rodman arrived in North Korea on Tuesday, bringing his ¡°basketball diplomacy¡± back to the country amid heightened tensions between Washington and Pyongyang over the reclusive nation¡¯s nuclear and missile program and its jailing of four Americans.

¡°I¡¯m back! I will discuss my mission upon my return to the USA,¡± Rodman said in a tweet Tuesday, with an attached photo that showed him holding what appeared to be an itinerary for a flight on Air Koryo ¡ª the North¡¯s state-owned flagship airline.

Speculation was rife that Rodman would play some unofficial role easing tensions between Washington and Pyongyang, though a top U.S. official visiting Tokyo insisted Rodman¡¯s trip was as a private citizen.