Building Collapse on Myrtle?

I was just checking some email when I heard a slew of sirens scream past my building.  A few moments later, I received this email from a reader: We were just trying to walk to the laundromat, but couldn't because it appears that a building on the north side of Myrtle between Ryerson and Hall collapsed and there was rubble across the sidewalk.  Not sure if this was caused by an explosion or what, or if it was an accident or intentional, but a pretty crazy sight.  Hope no one was inside the building when it came down and that no one was hurt.

I may head out to check it out now.  If anyone has any info, please leave it in the comments!