A report of white phosphorus residue inside a munitions crate at Osan Air Base in Pyeongtaek, South Korea, was received by local authorities at 5 p.m. on July 28. The Pyeongtaek city government issued an evacuation alert for nearby residents, while the U.S. 51st Fighter Wing stated the area was cordoned, the situation contained, and no injuries or ongoing risk occurred. The base is located approximately 60 kilometers south of Seoul.