North Korea celebrated the 73rd anniversary of its foundation with a night-time military parade, state media reported on Thursday, publishing photographs of marching rows of personnel in orange hazmat suits but no ballistic missiles.

Kim Jong Un, the leader of the reclusive state, attended the event as paramilitary and public security forces began marching at the Kim Il Sung square in the capital Pyongyang at midnight Wednesday, the official KCNA news agency said.

Rodong Sinmun, the ruling Worker's Party's newspaper...