I’m not sure how many were pedestrians, but the first reports I heard was this was outside a building that had blind tenants - Assn for the Blind or something like that, and most of the injuries were people in their building, from broken windows, shrapnel. It must have been a large explosion - two witnesses on a rooftop two blocks away told CNN they felt the shockwave ‘go thru our bodies.’
From eye-witnesses...the explosion on 23rd. was big, VERY big and so loud, her ears were still ringing 1/2 an hour later and she wasn’t all THAT near when it went off. Oh yes and there was a big cloud of smoke.
—heard that ,too—I think my tagline applies and that they weren’t very familiar with explosions—
From the photos, it was a substantial explosion., Door glass blown out, plenty of debris in the road. I think the report of number of injured is credible.