A delivery truck with the United States Postal Service crashed into the front of Ralph Gracie Jiu-Jitsu martial arts school in San Francisco’s Sunset District on Thursday.
The USPS truck apparently rolled back and struck the building located on Noriega Street just before 2 p.m., causing multiple glass panes to shatter, according to police.
Dozens of firefighters were on the scene clearing away broken glass that had spread across the sidewalk.
No one was injured, including the driver, and the building was empty at the time of the crash, according to the San Francisco Fire Department.


