PHILADELPHIA (AP) — A fast-moving fire erupted in Philadelphia at a transit bus lot filled with dozens of decommissioned vehicles. The Thursday morning blaze did not cause any injuries, but it burned for nearly two hours before it was declared under control. Authorities say 40 Southeastern Pennsylvania Transportation Authority buses were engulfed in flames. The cause of the blaze remains under investigation. The city’s Public Health Department inspectors collected samples to assess air quality and the potential for any threat. Citing an abundance of caution, the agency warned nearby residents to stay indoors if possible.