I was just walking down 7th st and it appears the cops had Kater blocked off partway down the block. There was yellow tape going all the way across Kater and a couple of bicycle cops were standing guard so to speak. They didn't seem to be acting urgently but they definitely didn't want people entering that area. I didn't want to bug them so I just walked on by.

Looked to be at about 670 Kater according to Google Street view. There is some kind of a driveway there.

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I think there was a block party there.