Activity has ramped up at a Pyongyang exhibition hall where North Korea held a large-scale weapons expo a year ago this month, NK Pro analysis of satellite imagery shows, suggesting preparations may be underway for a second such expo soon. 

The apparent event planning comes as North Korea is set to celebrate the 77th founding anniversary of the ruling Workers’ Party of Korea (WPK) on Oct. 10. 

NK Pro has not detected any signs that a military parade is in the works, though the start of cosmetic renovations in Kim Il Sung Square last month indicates