Emergency crews responded to reports of an explosion near Powell BART station in San Francisco Saturday evening.
Upon arrival, they discovered it was a firework that was set off in the area of 5th Street and Market, police said.
No injuries have been reported.
No additional information was immediately available.
This post was originally posted at http://www.nbcbayarea.com/news/local/Police-Activity-Near-Powell-BART-Station-in-San-Francisco-506614081.html.