A number of foreign cargo planes appeared parked at Pyongyang International Airport on Monday morning ahead of Russian leader Vladimir Putin’s planned arrival, according to NK Pro analysis of satellite imagery.

The Kremlin confirmed late on Monday that Putin will meet DPRK leader Kim Jong Un and stay in North Korea from June 18 to 19. He will also visit Yakutsk in the Russian Far East on Tuesday before flying on to Pyongyang.

Planet Labs imagery shows six large planes of roughly the same size and shape parked across from the airport terminal, three of which