India, July 21 -- An incident at 24 Hours Fitness on Montgomery Street in downtown San Francisco, California on Monday afternoon triggered panic around a possible explosion. Many residents reported hearing a loud explosion sound in the nearby areas.

As of now, no confirmation has come from the San Francisco Police Department about a potential explosion on Montgomery Street. According to Citizen app, which sends emergency alerts based on user's reports, the incident seemed to a fireworks incident mistaken for a possible explosion.

Multiple residents of downtown San Francisco reported on social media about hearing a loud boom sound this afternoon. Many thought it was an explosion, with some even claiming that their "buildings were shaking...