North Korea has mysteriously banned foreign visitors amid rumors that Chinese President Xi Jinping is going to Pyongyang soon.

Radio Free Asia on Tuesday reported that the North has suspended foreign group tours and banned visits by foreign businesspeople until Sept. 5.

A businessman in the Chinese city of Shenyang told RFA that he had booked an airline ticket to Pyongyang for mid-August but his North Korean partner asked him to put off travel until after Sept. 5. Several other businessmen had also had to put off trips to Pyongyang. The instruction seemed to come from the regime, he added.