SEOUL, South Korea (AP) — The U.S. military said Thursday its investigations confirmed there were no white phosphorus leak at one of its air bases in South Korea, days after local authorities urged residents to evacuate over concerns about a suspected leak.

On July 28, the Pyeongtaek city government sent text messages advising its residents to move to safe places and avoid skin exposure, saying white phosphorus was leaked at the Osan Air Base in the city, which is just south of Seoul, the capital.