Police have been called to Jackson and Davis in San Francisco, which is currently blocked off. One SFist tipster suggested that a man has "jumped to his death...from one of the high-rise residential buildings on that corner." SFist has been unable to confirm that account of events with SFPD, but we've heard from several contacts that, in fact, the scene... well, it isn't a good one.
In the meantime, please stay out of the area.